Which abdominal wall muscle inserts on the xiphoid process and the linea alba? When you say "ah" and stick out your tongue, which muscle do you use? __________ muscles have their fibers arranged obliquely to their tendons In a manner similar to a feather, such as unipennate, bipennate, and multipennate muscles. D. extensor carpi radialis brevis B sarcomere C. A. tibialis anterior Which of the following muscles extends the head on the neck? a. It has two heads that meld to form one insertion. Which muscle is an antagonist to the psoas major? What does the term levator mean? E. lever is a pivot point. Major Skeletal Muscle Synergists-Biol 241 Sap, The Language of Composition: Reading, Writing, Rhetoric, Lawrence Scanlon, Renee H. Shea, Robin Dissin Aufses, Byron Almen, Dorothy Payne, Stefan Kostka, Lecture 27: The Federal Executive & Bureaucra. D adductor group, The muscle on the posterior thigh that extends the thigh is the: B the parietal lobes of the cerebrum integrate conscious muscle sense The orbicularis oculi muscle D. multifidus The name has the origin of the Latin words: sternon = chest; cleido = clavicle and the Greek words: mastos = breast and eidos = shape, form. What is the antagonist of the Longissimus (Spine extension)? Called also antagonist. a) diaphragm b) sternocleidomastoid c) pectoralis major d) scalenes. The sternocleidomastoid muscle extends from the mastoid process of the temporal bone to the sternum and medial clavicle. (i) Is the wavelength of the ground-state wave function This article will discuss the anatomy, function and clinical relations of the sternocleidomastoid muscle. The levator palpebrae superioris muscle The, Which muscle acts as an antagonist to trapezius? D sarcoplasmic reticulum, In a muscle fiber, the Z lines are the: A end lines of a sarcomere, and actin filaments are attached A. vomiting. A sodium ions B. biceps brachii and supinator. Clostridium botulinum Clostridium botulinum type A Clostridium botulinum type E Clostridium botulinum type B Clostridium botulinum type F Clostridium botulinum type D. When the biceps brachii contracts, the elbow flexes. Match the following fascicle arrangement with the appropriate power generation or description: Parallel, Straplike with an expanded belly; great ability to shorten but not usually very powerful. B. flex the neck. external intercostals Achudhan Karunaharamoorthy, Arzt A. fix the scapula in place. Which of the following is found in the posterior group of forearm muscles? The muscles that act as the prime mover of elbow flexion are the while the are the antagonist that cause extension of the arm. B masseter - Multipennate muscles do not produce much power because the fibers run in many directions. brevis; long c. It pushes the charge backward. c) sternocleidomastoid. D. tensor fasciae latae B. subscapularis D. lateral rotation of the arm. B. stress fractures of the fibula 2 to 5 cm distal to the knee. C. external abdominal oblique. C. masseter muscles. B. contributes to pouting. Prime movers and antagonists are often paired up on opposite sides of a joint, with their prime mover/antagonist roles reversing as the movement changes direction. C. abductor pollicis longus C dorsiflex the foot List the muscles of the Thenar eminence and their function. A. brachioradialis and anconeus. E. psoas minor, Which back muscle extends and rotates the vertebral column? Which of the following muscles is not a rotator cuff muscle? 2. B. hyoglossus B hemoglobin in RBCs brings oxygen to muscles C gluteus maximus C. latissimus dorsi a) sternocleidomastoid b) orbicularis oculi c) trapezius d) platysma, Which of the following muscles are innervated by the trigeminal nerve? A deltoid Teres Major, Latissimus Dorsi, Pectoralis Major, Coracobrachialis. What is the antagonist of the Rhomboids (Retract scapula)? E. coccygeus only. It is thick and narrow at its center, but broader and thinner at either end. B), The sternocleidomastoid muscles flex the neck and the splenius cervicis muscles extend it. A. sartorius An exception to this generalization is the extensor-flexor musculature of the ___. serratus anterior The SCM muscle group can contain a whopping seven trigger points, making it's trigger point density one of the highest in the body. B. serratus anterior All of these muscles working together can create an efficient, consistent stream of air that will help a singer create a strong and beautiful . Repeat on other side. C. adductor magnus B triceps brachii What is the antagonist of the Flexor Digitorum Superficialis (finger flexion)? B quadriceps femoris A. Sternocleidomastoid. In order to stabilize the hyoid so that the larynx can be elevated in swallowing, the _____ muscle group is used. B. biceps brachii. Of the following muscles of the thigh, which one is on the posterior side? D. extensor carpi radialis longus. - the nervous system's control of the muscle, the nervous system's control of the muscle. Match the following muscle action with its appropriate term: The muscles that perform most of the action in producing the movement, Match the action with its appropriate muscle name: Extends, adducts, and rotates arm medially. D. thumb; index finger B. gastrocnemius. What is the antagonist of the Extensor Digitorum (finger extension)? The type of muscle that functions as a sphincter is Which of these muscles is the muscle of expiration? D. vastus medialis D. subclavius A sartorius bulbospongiosus D. causes crow's feet wrinkles. a. A sartorius As the agonist flexes, the opposite muscle (the. In order to put on a glove, the fingers are abducted by hand muscles called the E. fibularis brevis, . B. procerus The muscle lies very superficially so that it is both easily visible and palpable. C. flexor pollicis brevis Match the muscle with its correct origin and insertion: Temporalis, Origin: temporal fossa C. peroneus tertius C both A and B d) zygomaticus major. d. Splenius. A. interossei palmaris B. external abdominal oblique Which of the following are correctly matched? thyrohyoid A. stomach contractions. E. thigh and hip adductors. adduction B sacromere DOI: 10.1016/S0924-980X(96)96554-6 Corpus ID: 35984278; Effects of experimental muscle pain on muscle activity and co-ordination during static and dynamic motor function. A. pectoralis major How would a lesion in the cerebellum differ from a lesion in the basal nuclei with respect to skeletal muscle function? movement of semimembranosus and semitendinosus. D. medial thigh compartment. . a) Temporalis b) Rectus abdominis c) Erector spinae d) Sternocleidomastoid e) Splenius capitis. fulcrum-pull-weight E. rhomboideus major, . D. teres major B. longissimus capitis A. does most of the work in "sit-ups." D. pronator quadratus Explain the role of both muscles in terms of agonist and antagonist in both of these movements. A. sacral B. thoracic C. cervical D. cranial, Which muscle acts as an agonist with the teres minor during lateral rotation of the shoulder? C. fibularis longus C gluteus medius Wiki User. C. supraspinatus Musculus sternocleidomastoideus 1/3 Synonyms: SCM The sternocleidomastoid muscle is a two-headed neck muscle, which true to its name bears attachments to the manubrium of sternum (sterno-), the clavicle (-cleido-), and the mastoid process of the temporal bone (-mastoid). Which of the following muscles is innervated by the trigeminal nerve (CN V)? Last reviewed: February 21, 2023 C. attach the clavicle to the humerus. A. laterally rotates the arm. An antagonist muscle relaxes (or stretches) when the prime mover muscle contracts. D. decreased support for the pelvic viscera. Choose the letter that best answers the question or completes the statement. a) biceps brachii. A muscle that stabilizes the origin of the prime mover (i.e. B. teres major D- orbicularis oris- puckers lips, Which muscle is NOT paired with its correct function? B. rectus femoris bones serve as levers. People with this disorder show difficulties swallowing, extreme immobility of their throat, facial asymmetries and scoliosis. abduction D both A and B, and loss of calcium ions, During exercise, the purpose of increased sweating is to: B pectoralis major a) temporalis. Identify the vertebral parts/areas described below: Provides lever against which muscles pull. Apply a downward pressure. E. hyoglossus, Which of the following muscles is involved in swallowing? The type of muscle that can contract with the greatest force is the The orbicularis oris muscle Which muscle fixes the clavicle or elevates the first rib? Which of the following muscles extends the forearm and has its insertion on the ulna? A. Frontalis B. Lateral rectus C. Sternocleidomastoid D. Masseter E. Hyoglossus. An antagonist for a muscle on the posterior side of the thigh would be found on the: A anterior side of the thigh B medial side of the thigh C anterior side of the lower leg D posterior side of the lower leg B Which statement is NOT true of antagonistic muscles? A. erector spinae B. D. gluteus minimus. C brachioradialis and biceps brachii The digastric muscle is involved in What is the antagonist of the Adductor Magnus (adduction of femur)? Both wells contain identical quantum particles, one in each well. . What muscle is the antagonist to the sternocleidomastoid? Which of the following muscles is a flexor of the thigh? A. tibialis posterior A. gluteus medius and gluteus maximus. What is the antagonist of the Vastus Medialis (knee extension)? three, moose, plane. A. pectineus B. latissimus dorsi Become a Study.com member to unlock this answer! A they have opposite functions B they push bones in opposite directions Sternocleidomastoid is the most superficial and largest muscle in the front portion of the neck. Which of the following muscles is involved in chewing gum? The end of the muscle that connects to the sternum is the A. origin. (iii) Is the groundstate energy of the particle Contraction of the inferior rectus muscle directs the pupil to look B. tibialis anterior A flex the neck D. levator palpebrae superioris What are the muscles in the neck and the chest area? D. extensor digitorum longus The depressor anguli oris muscle d) Stylohoid. Under the sternocleidomastoid region runs a neurovascular bundle containing: When putting a central venous catheter (CVC), the medial edge of the sternocleidomastoid muscle serves as a lead structure. Their antagonists are the longus capitis and the rectus capitis anterior. Tilt your head towards the left. B masseter The bulge of the calf is caused by the ___ and___ muscles. Agonists are the prime movers for an action. A muscle that assists the prime mover muscle. E. nonlever system. The information we provide is grounded on academic literature and peer-reviewed research. Which of the following muscles has superior, middle and inferior sections? Createyouraccount. An antagonist is A. a muscle working in opposition to another muscle. D the most strenuous muscle contractions, The part of the brain that initiates muscle contraction is the: a. Digastric b. Mylohyoid c. Omohyoid d. Sternocleidomastoid. A latissimus dorsi D. sartorius and rectus femoris. C. medially rotates the arm. The muscle that is contracting is called the agonist and the muscle that is relaxing or lengthening is called the antagonist. C. psoas major and iliacus. E. index finger; thumb. D trapezius, The muscle on the posterior side of the trunk that extends and adducts the arm is the: Damage to the muscle called the levator ani would result in E. supinator and brachialis. Their antagonists are the _____ muscles. Which description of a muscle action is NOT correct? However, the second heart field has recently been identified as an additional source of myocardial progenitor cells. A. puckers the mouth for kissing. e) buccinator. A a sustained contraction Which of the following statements is correct? Describe what would happen to the surface temperature of a star if its radius doubled but there was no change in the stars luminosity. Most flexor muscles are located on the ______ aspect of the body, most extensors are located ______. D. multifidus In the following exercise, the first sentence describes someone or something. The biceps femoris is part of the Which muscles insert upon the scapula and attach the scapula to the thorax? What is the antagonist muscle to the sternocleidomastoid? E. gracilis, Which muscle extends the four lateral toes? C. styloglossus A muscle that extends both the wrist and the index finger is the C sustained muscle contractions C. body. In order for both eyes to direct their gaze to the right, which of the following muscles are used? B iliopsoas and quadriceps femoris C gluteus medius A. iliopsoas. Grounded on academic literature and research, validated by experts, and trusted by more than 2 million users. A. tibialis anterior What is the antagonist of the Splenius Capitus (Neck extension)? pectoralis major Match the word to its correct meaning: Rectus. C. biceps femoris A. trapezius A. pennate. Do a total of 5 to 10 side neck stretches. B. biceps brachii a) Deltoid b) Pec Major c) Bicep Brachii d) Supraspinatus. C. extensor carpi radialis brevis. Which muscle is the prime mover of arm abduction (assuming all fibers are used)? rotation, Choosing from the lateral neck muscles, which muscle is the prime mover for flexion of the head at the neck? An agonist (prime mover) b. What is the antagonist of the Rectus Femoris (knee extension)? a) Temporalis b) Frontalis c) Sternocleidomastoid d) Risorius. a. Biceps brachii b. Triceps brachii c. Jaw d. Tongue. C. 2 and 3 it closes, purses, and protrudes the lips. A. raise the head. . If L = load, F = fulcrum, and E = effort, what type of lever system is described as LEF? The abdominal muscle that has its origin at the pubic crest and symphysis pubis is the D. Pectoralis minor. B hamstring group E. flexes the shoulder. A. pterygoid Which of the following is not a muscle primarily involved in the breathing process? Anatomy of the Respiratory System The function of the respiratory system is to obtain oxygen from the atmospheric air Oxygenating all cells of the body Obtains oxygen from atmospheric air, alveoli is where gas exchange occurs Oxygen diffuses from the blood Ventilation:taking oxygen in and exhaling co2 (breathing) inspiration : transport of oxygen through alveoli . Stabilizes the wrist during finger extension. C. gluteus maximus. What is the antagonist of the Flexor Hallucis Longus (Toe 1 flexion)? The sternocleidomastoid is the prime mover and the splenius cervicis is the fixator. a. B. contributes to pouting. Kenhub. What is the function of Sternocleidomastoid? anterior, choose all that apply: The zygomaticus major muscle What is the antagonist of the Spinalis (Spine extension)? Rectus Abdominus What is the antagonist of the Longissimus (Spine extension)? - gastrocnemius tendon at the ankle: first-class lever, biceps brachii at the elbow; third-class lever, Identify the action of the transversus abdominis. c) levator palpebrae superioris. B. soleus What is the antagonist of the Lower Portion Trapezius (Depress scapula)? The term "shin splints" is applied to The anconeus works with the triceps brachii to dorsiflexion What is the antagonist of the Gluteus Minimus (Abduction of femur)? A simple example of an antagonist is the Queen in Snow White and the Seven Dwarfs, who opposes and wants to destroy Snow White. parallel arrangement of fascicles; characteristic of sphincter muscles C. extensor digitorum longus c) medial pterygoid. the muscle elevates and/or adducts a region. E. lifting weight with your arm. With respect to skeletal muscles, proprioceptors are important for: A. erector spinae 10. 2. Which one of those muscles is considered the prime mover? . The muscle(s) of mastication include which of the following? Name the following: A contraction in which muscles produce tension but do not shorten. E. raises the eyelid. 2012-03-06 . Respiratory Problems. B. longissimus capitis A. soleus. D. defecation. D. tensor fasciae latae - the location of the muscle E. vastus lateralis, . Muscles that elevate the jaw and close the mouth include the B. supraspinatus and latissimus dorsi. E. zygomaticus and buccinator. E. stylohyoid. c) Orbicularis oculi. A. gastrocnemius A remove excess body heat . Which of the following muscles has two heads? E. gracilis, Which of the following is the longest muscle in the body? The muscles of the body are classified into regions known as axial and appendicular. A. pectoralis major and teres major. A. levator scapulae D. tummy tucks. E. multipennate. What are the magnitude, sign, and xxx-coordinate of the third charge? Which of these muscles is located on the ventral (anterior) side of the body? E. back muscles are similar in strength to the back muscles of cattle. (ii) Is the magnitude of the ground-state momentum Sternocleidomastoid muscle 32 languages The sternocleidomastoid muscle is one of the largest and most superficial cervical muscles. A. scalenes Select all that apply. In this case, Antagonists of the Scalenes would be your posterior neck muscles, such as: Upper Trapezius. B. childbirth. D. vastus medialis Which of the following best describes the orbicularis oris? The sternocleidomastoid muscles flex the neck, and the splenius cervicis muscles extend it. The sternocleidomastoids (SCMs) are superficially located neck muscles that play an important role in tilting your head and turning your neck, as well as other movements. E. piriformis and quadratus femoris. The sternocleidomastoid is innervated by the accessory nerve . B negative/neutral C impulses from the brain are needed for voluntary movement E. gracilis, Of the following muscles of the thigh, which one is NOT part of the quadriceps group? C cerebrum: parietal lobes The pelvic diaphragm is formed by the When viewed together, this pair forms a diamond or trapezoid shape, hence its name. Hi anatomy students;) ! B. soleus B. difficult defecation. Damage to which of the following muscles would hinder inspiration? The muscle that divides the ventral body cavity into the thoracic and abdominopelvic cavities is the __________. The more stationary attachment of a muscle to a bone is called the: Which statement is NOT true of gross muscle structure? E. fibularis brevis, choose all that apply: transverse; parallel to the long axis. D. flex the forearm. D. triceps brachii B. extend the forearm. A triceps brachii- extends dorearm E. teres major. The antagonist to the sternocleidomastoid is the splenius capitis. What is the antagonist of the Gluteus Medius (abduction of femur)? A. difficult urination. external anal sphincter D adductor group, The mucle on the lateral side of the hip that abducts the thigh is the: A. erector spinae E. down. The prime mover of arm flexion is the __________. If so, where does it form an image? A change in diet and lifestyle (remains, remain) his only hope for recovery. All of the following muscles are rotators of the arm. B. crow's feet wrinkles. Antagonistic muscle that is paired with an agonist muscle is referred together as antagonistic pairs. A. auricularis C. peroneus brevis Anterocollis is a type of cervical dystonia characterized by simultaneous and repetitive antagonist muscles contractions, resulting in abnormal neck flexion. C. extensor digitorum longus D. causes crow's feet wrinkles. D. biceps femoris D. chubby cheeks. A external intercostals and internal intercostals Rectus Abdominus, External oblique, Internal oblique. Which functional group has the major responsibility for countering a specific movement? Fixators hold joints in place, so movement does not occur. B. adduction of the arm. C. ring finger; thumb C. inflammation of the gastrocnemius. Please rename your sets if you copy mine and DO NOT include the term Sap's Student in the title of your set. E. psoas major. D there is too little oxygen in the lungs, In the neuromuscular junction, the membrane of the muscle fiber is called the: D. multifidus levator ani, choose all that apply: Sternocleidomastoid (scm) muscle pain typically brings complaints of dizziness or sudden hearing loss, headache or jaw pain, even when everything appears to be normal. B. biceps femoris Iliopsoas, Sartorius, Tensor Fasciae Latae. C. pectoralis minor B. serratus anterior E. rhomboideus major, Which muscle rotates and protracts the scapula, and elevates the ribs? E. deltoid, . D gluteus medius and adductor group, Which muscle is NOT paired with an antagonist? Teres Major, Pectoralis Major, Latissimus dorsi. E. psoas minor, Which back muscle inserts on the ribs and vertebrae? circular D. hold the head of the humerus in the glenoid fossa of the scapula. C teres major D. function and size. A. up. E. linea alba. D. multifidus When both muscles of this pair are contracted simultaneously, they flex the neck forward. D. rotate the head toward the left. What is the antagonist of the Iliocostalis (Spine extension)? (3) left lateral rectus deltoid pennate arrangement of fascicles; spindle-shaped muscle D. back muscles are not very strong. Some of the antagonistic pairs are as follows: Biceps and triceps Gluteus maximum and hip flexors Hamstrings and quadriceps Pectoralis major and latissimus dorsi D. subclavius e) Trapezius. transversus thoracis, levator scapulae, pectoralis minor, rhomboideus muscles, serratus anterior, trapezius, choose all that apply: E. trapezius, hold the head of the humerus in the glenoid fossa of the scapula, The rotator cuff muscles C tibialis anterior, The function of the tibial is anterior is to: A. extend the neck. Introduction ; 11.1 Interactions of Skeletal Muscles, Their Fascicle Arrangement, and Their Lever Systems ; 11.2 Naming Skeletal Muscles ; 11.3 Axial Muscles of the Head, Neck, and Back ; 11.4 Axial Muscles of the Abdominal Wall, and Thorax ; 11.5 Muscles of the Pectoral Girdle and Upper Limbs ; 11.6 Appendicular Muscles of the Pelvic Girdle and Lower Limbs ; Key Terms Which of the following muscles would be considered an antagonist to the rectus femoris? Synonyms for sternocleidomastoid (muscle) in Free Thesaurus. A gaseous mixture with a molar analysis of 20%CO220\ \% \mathrm{CO}_220%CO2, 40%CO40\ \% \mathrm{CO}40%CO, and 40%O240\ \% \mathrm{O}_240%O2 enters a heat exchanger and is heated at constant pressure. An antagonist muscle is in opposition to a prime mover in that it provides some resistance and/or reverses a given movement. D depolarization is stimulated by cholinesterase, In the sliding filament mechanism of muscle contraction, the proteins that inhibit contractions are: B. fingers. D. weight is the muscle mass. Materials and methods: In this cross-sectional study masticatory efficiency parameters (number of particles, mean diameter and . C extend the vertebral column Which of the following muscle is found in the head? A. erector spinae The pelvic diaphragm consists of what two muscles? C. biceps femoris B. rectus femoris Learning anatomy is a massive undertaking, and we're here to help you pass with flying colours. Match the word to its correct meaning: Brevis, Match the word to its correct meaning: Costal. A. rectus femoris Read more. B. flexor carpi ulnaris D orbicularis winkus, The muscle of the face that raises the mandible is the: The deltoid is a muscle named according to __________. A. tibialis anterior What is the antagonist of the Flexor Digitorum Profundus (finger flexion)? Sternocleidomastoid muscle: want to learn more about it? C. linea alba What is the antagonist of the Teres Minor (Lateral rotation humerus)? D. extensor hallicus longus What action would a muscle have to be responsible for in order for the muscle to be an antagonist of the triceps brachia at the shoulder joint? D. causes crow's feet wrinkles. A orbicularis oris D. extensor carpi radialis longus. A. tibialis anterior D. levator anguli oris B. sartorius What is the antagonist of the Serratus Anterior (Protract scapula)? A. back muscles are strong to maintain erect posture. C. pectoralis minor - The number of muscle fibers best determines how powerful a muscle will be. (c) equal for both wells? Reading time: 5 minutes. C. pectoralis minor C. interspinales joint act as a fulcrum. C. Diaphragm. copyright 2003-2023 Homework.Study.com. Muscle antagonists In order to maintain a balance of tension at a joint we also have a muscle or muscles that resist a movement. B center lines of a sarcomere, and actin filaments are attached B. accounts for a sprinter's stance. D tetanus/extended action potential, Which statement is NOT true of responses to excercise? B. straight. plantar flexion, Triangular muscles, like the pectoralis major are also called _____ muscles. The trapezius muscle is a large, triangular, paired muscle located on the posterior aspect of the neck and thorax. D. transversus abdominis Antagonists: Longissimus Capitis Spinalis Capitis Splenius Capitis Semispinalis Capitis Sternocleidomastoid (posterior fibers) 3. D. causes crow's feet wrinkles. A orbicularis oris E. function and size, The brachioradialis is named for its . Each of the following terms is a descriptive term for a muscle's action, except __________. movement of Vastus lateralis and Vastus medialis. Their antagonists are the muscles. A student (m = 63 kg) falls freely from rest and strikes the ground. If this is the case it might be time to consider a muscular or mechanical reason for the symptoms. a. platysma b. occipitalis c. sternohyoid d. mylohyoid. . levator scapulae [1] In the anterior triangle, we find the suprahyoid and infrahyoid muscles. sternocleidomastoid a. Longissimus. . Platysma and the sternocleidomastoid muscle A loose connective tissue layer called the superficial cervical fascia is present between the platysma and the sternocleidomastoid muscle, which allows an easy glide of the platysma over the sternocleidomastoid. Muscles and Movement | Antagonist Pairs of Muscles Siebert Science 16.4K subscribers Subscribe 5.5K 159K views 2 years ago Anatomy & Physiology CORRECTION: The origins of the deltoid are the. D deltoid and brachioradialis, The muscle on the posterior lower leg that plantar flexes the foot is the: A during polarization there is a positive charge outside The cervical plexus will have a honeycomb appearance of hypoechoic nodules super-cial to the brachial plexus within the groove between the inter-scalene muscles as shown in Fig. A. quadriceps femoris A. puckers the mouth for kissing. E. orbicularis oris, Raising the eyebrows is the action of the _____ muscles. a. intermittent claudication b. spasmodic torticollis c. myasthenia gravis d. contracture, What muscle performs the opposite action (antagonist) of soleus? E. palm. What is the antagonist of the Pectoralis Minor (Protract scapula)? A biceps brachii- flexes forearm Muscles Muscles. D muscle fibers must have oxygen to complete cell respiration, The term "oxygen debt" means Which muscle is an antagonist to the biceps brachii muscle? Rectus Femoris, Vastus Lateralis, Vastus Medialis, Vastus Intermedius. What is the antagonist of the Iliopsoas (flexion of femur)? D. rhombohedral. Previously, a single source of progenitor cells was thought to be responsible for the formation of the cardiac muscle. B. lumbricals. Which muscle acts as an antagonist to the lower fibers of the trapezius during depression of the scapula? B hemoglobin in muscles What is the antagonist of the Supraspinatus (Abducts humerus)? . E. quadratus lumborum, Which abdominal wall muscle originates on the iliac crest and the lower lumbar vertebrae? A. flexors. The antagonist of the splenius capitis muscle is the Sternocleidomastoid. - biceps brachii at the elbow; third-class lever What type of motor is known as a constant-speed motor? What is the antagonist of the Extensor Carpi Radialis Longus (wrist extension)? a) Splenius capitis b) Semispinalis capitis c) Sternocleidomastoid d) Trapezius. C the liver owes the muscles some oxygen When both sternocleidomastoid muscles contract, the head is flexed. E. triceps brachii, Which muscle will elevate the scapula? C. contributes to laughing and smiling. b) masseter. The main muscle that resists a movement is called the antagonist.
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