Which of the following muscles is unique, in that it acts as its own antagonist? a) Deltoid b) Pec Major c) Bicep Brachii d) Supraspinatus. B. subscapularis D. insertion. What are the muscles of mastication? lateral __________ muscles have their fibers arranged obliquely to their tendons In a manner similar to a feather, such as unipennate, bipennate, and multipennate muscles. D. teres major Which of the following is not an intrinsic muscle of the head? B. opening the mouth. C. interspinales D the most strenuous muscle contractions, The part of the brain that initiates muscle contraction is the: B hemoglobin in RBCs brings oxygen to muscles Which of the following muscles flexes the wrist? C. urination. B depolarization creates a reversal of charges 2. a. You should feel a stretch on the left side of your neck. C. orbicularis oculi parallel, List the arrangement of components found in a third-class lever. The deltoid is a muscle named according to __________. Two positive point charges qqq and 4q4 q4q are at x=0x=0x=0 and x=Lx=Lx=L, respectively, and free to move. The major head flexor muscles are the __________. Powerful flexor and adductor of hand. An equilibrium mixture of CO2,CO\mathrm{CO}_2, \mathrm{CO}CO2,CO, and O2\mathrm{O}_2O2 exits at 3000K,1.5bar3000 \mathrm{~K}, 1.5\ \text{bar}3000K,1.5bar. E. temporalis, Well developed mentalis muscles result in A. quadriceps femoris A. biceps femoris. B. fingers. Tilt your head to the right as far as you comfortably can. of the sternocleidomastoid muscle 10x faster and easier? Provide their functions. C dorsiflex the foot D the frontal lobes of the cerebellum initiate muscle contraction, The direct energy source for muscle contraction is: Biceps Brachii, Brachialis, Brachioradialis. C. gluteus maximus. Match the action with its appropriate arm muscle name: Flexes forearm at elbow joint and supinates forearm. A. back muscles are strong to maintain erect posture. B. soleus A classic example of this condition is the muscular torticollis, a tonic spasm of the sternocleidomastoid. B. flexor carpi ulnaris C. adductor magnus Reading time: 5 minutes. The brachial plexus should lie between these two muscles. C. orbicularis oris Upper Portion Trapezius, Levator scapulae. C. masseter muscles. C. pectoralis minor C. longissimus capitis A) The sternocleidomastoid is the synergist, and the splenius cervicis is the fixator. c. Spinalis. A. Sternocleidomastoid. B. Abdominal. D. 1 and 4 E. difficult defecation and decreased support for the pelvic viscera. The sternal head originates from the manubrium of sternum, while the clavicular head from the medial thirdof the clavicle. it closes, purses, and protrudes the lips. A. puckers the mouth for kissing. . B. gluteus maximus and vastus lateralis. Which of the following is a part of the quadriceps femoris muscle group? What muscles are postural antagonists to the sternocleidomastoid? E. teres major. TLR9 is an important receptor expressed in immune system cells including dendritic cells, macrophages, natural killer cells, and other antigen presenting cells. D. masseter How does the serratus anterior function as an antagonist to the rhomboid muscles? pennate arrangement of fascicles; spindle-shaped muscle The depressor anguli oris muscle The bulge of the calf is caused by the ___ and___ muscles. Hi anatomy students;) ! Biceps Femoris, Semitendinosus, Semimembranosus. The gluteus maximus B. lower the head. D adductor group, The mucle on the lateral side of the hip that abducts the thigh is the: When the internal intercostals and the abdominals engage to bring the ribcage back into its starting position, try to keep the ribcage and lungs as expanded as possible even as you exhale the breath. The sternocleidomastoid and trapezius muscles are located within the investing fascia of the neck (Figure 25-2A).. E. triceps brachii. 5. E. swallowing. They both work together to help you walk, sit, stand up, and do many other actions. What is the antagonist of the Biceps Femoris (knee flexion)? D. flexor digitorum profundus C. peroneus tertius D. tibialis posterior An antagonist is usually a character who opposes the protagonist (or main character) of a story, but the antagonist can also be a group of characters, institution, or force against which the protagonist must contend. B sarcomere From what height did the student fall? It can also occur with certain health conditions, such as asthma and. The antagonist to the sternocleidomastoid is the splenius capitis. People with this disorder show difficulties swallowing, extreme immobility of their throat, facial asymmetries and scoliosis. E. attach at the distal end of the humerus, A tennis player complains of severe pain in the shoulder when serving or returning an overhead volley. Which muscles insert upon the scapula and attach the scapula to the thorax? B. external abdominal oblique C. medially rotates the arm. Curated learning paths created by our anatomy experts, 1000s of high quality anatomy illustrations and articles. Write down equations to describe the alpha decay of the following atoms: C. vastus intermedius d) buccinator. In an antagonistic muscle pair as one muscle contracts the other muscle relaxes or lengthens. What are the muscles in the neck and the chest area? B. hyperextension of the head B quadriceps femoris B. serratus anterior D. extensor carpi radialis longus. E. suprahyoid muscles. What is the antagonist of the Pectoralis Major (Flexion of humerus)? B. thumb; little finger Match the muscle's name with what generally describes one or more of its features: Muscle name that describes size. C. fulcrum is the part being moved. D. zygomaticus major C- tibialis anterior- dorsiflexes foot What is the antagonist of the Peroneus Longus (eversion)? choose all that apply. inversion A. sternocleidomastoid C myoglobin in blood plasma A. sartorius. Nelissen, in Principles of Gender-Specific Medicine (Third Edition), 2017 37.3.1 Focal Dystonia. When both sternocleidomastoid muscles contract, the head is flexed. B quadriceps femoris A. rectus abdominis. B. sartorius What are attachments for these muscles, and their functions? The primary actions of the muscle are rotation of the head to the opposite side and flexion of the neck. a. external intercostal b. abdominal wall muscles c. diaphragm d. sternocleidomastoid e. pectoralis major, Protrusion-Retrusion involves the movements of which muscle? Which of the following are correctly matched? A latissimus dorsi When viewed together, this pair forms a diamond or trapezoid shape, hence its name. B. transversus abdominis. An agonist muscle is a muscle that is primarily responsible for the action being demonstrated. It is also known as SCM or Sternomastoid or Sterno muscle. What is the relationship between these muscles when bowing your head? D. sphincter urethrae and sphincter ani muscles. E. vastus lateralis, . Which of the following muscles acts to protract the mandible? A simple example of an antagonist is the Queen in Snow White and the Seven Dwarfs, who opposes and wants to destroy Snow White. The muscle(s) of mastication include which of the following? How many origins are there for the biceps brachii muscle? . a) Splenius capitis b) Semispinalis capitis c) Sternocleidomastoid d) Trapezius. E. Scalenes. A. deltoid Tilt your head towards the left. Which of the following muscles has two heads? 2 and 4 D. extensor digitorum longus A. erector spinae D. lateral rotation of the arm. a. platysma b. occipitalis c. sternohyoid d. mylohyoid. D. vocalis Contracting the right sternocleidomastoid muscle would A actin and troponin The antagonist of the splenius capitis muscle is the Sternocleidomastoid. D. back muscles are not very strong. A orbicularis oris What is the antagonist of the Middle Portion Trapezius (Retract scapula)? B. soleus D. deltoid A they have opposite functions B they push bones in opposite directions A. The infraspinatus Apply a downward pressure. E. raises the eyelid. D orbicularis oculi- closes eye, Which muscle is NOT paired with its correct function? e) latissimus dorsi. Grounded on academic literature and research, validated by experts, and trusted by more than 2 million users. With respect to skeletal muscles, proprioceptors are important for: 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. D iliopsoas, The function of the sacrospinalis group is to Assume that the only force acting on him during the collision is that due to the ground. E. biceps femoris. B. attach the arm to the thorax. What is the antagonist of the Extensor Digitorum (finger extension)? the long axis What is the antagonist of the Triceps Brachii (extension of forearm)? A. genioglossus B. coracobrachialis B. accounts for a sprinter's stance. A. tibialis anterior B deltoid-abducts arm D. rhombohedral. When both muscles of this pair are contracted simultaneously, they flex the neck forward. D. sartorius and rectus femoris. 2023 C tibialis anterior, The function of the tibial is anterior is to: B sacrospinalis Which of the following muscles is named for its location? plantar flexion, Triangular muscles, like the pectoralis major are also called _____ muscles. B pectoralis major What is this muscle called? The Sternocleidomastoid Trigger Points. Supination of the forearm and hand is accomplished by the Fixators hold joints in place, so movement does not occur. D more permeable to sodium ions, Which statement is NOT true of the electrical events at the sarcolemma? pectoralis major D. extensor digitorum longus 5. What is the antagonist of the Upper Portion Trapezius (Elevate scapula)? serratus anterior What is the relationship between these muscles when bowing your head? An antagonist muscle is in opposition to a prime mover in that it provides some resistance and/or reverses a given movement. D. tensor fasciae latae B. biceps brachii. What is the antagonist of the Pronator Teres (pronate forearm)? A breathing has stopped and there is no oxygen in the blood What is the antagonist of the External Oblique (Trunk flexion)? C. extensor digitorum longus . B. serratus anterior Place your left hand on the right side of your head. Which one of those muscles is considered the prime mover? B. a) gluteus medius. An exception to this generalization is the extensor-flexor musculature of the ___. What is the antagonist of the Extensor Carpi Radialis Longus (wrist extension)? C. contributes to laughing and smiling. E. abductor pollicis brevis. C. attach the clavicle to the humerus. What is the antagonist of the Biceps Brachii (Flexion of forearm)? B. teres major D. causes crow's feet wrinkles. The sternocleidomastoid muscles flex the neck, and the splenius cervicis muscles extend it. C. body. Sternocleidomastoid is the most superficial and largest muscle in the front portion of the neck. E. soleus, Which of the following is inserted on the calcaneus by the Achilles tendon? D. retinaculum. B tetanus D sarcolemma, At the neuromuscular junction, the sacrolemma contains: Sternocleidomastoid (scm) muscle pain typically brings complaints of dizziness or sudden hearing loss, headache or jaw pain, even when everything appears to be normal. C. biceps femoris movement of semimembranosus and semitendinosus. Which of the following muscles is primarily a postural muscle? When the biceps brachii contracts, the elbow flexes. E. gracilis, Which muscle extends the four lateral toes? d) masseter. The sternocleidomastoid muscle extends from the mastoid process of the temporal bone to the sternum and medial clavicle. A. rectus femoris weight-fulcrum-pull Which muscle group is the antagonist? Rectus Abdominus What is the antagonist of the Longissimus (Spine extension)? A. quadriceps femoris What are the three muscles in the group of arm flexors, innervated by the musculocutaneous nerve? C. internal abdominal oblique E. Scalenes. What is the antagonist of the Flexor Hallucis Longus (Toe 1 flexion)? What is the antagonist of the Iliocostalis (Spine extension)? B sacrospinalis group Sternocleidomastoid: a) used in chewing b) muscle of head or neck c) mandible d) cranium e) atlas f) muscle that move upper extremity g) suicide bags h) epiphysis i) cutaneous j) muscle that move lower extremity. Once identified, the needle is slowly advanced following the posterior border of the sternocleidomastoid . A muscle terminal B. difficult defecation. A bilateral contraction elevates the head by dorsally extending the upper cervical joints. A) The sternocleidomastoid is the prime mover, and the splenius cervicis is the fixator. D. the stationary end of the muscle. B. gastrocnemius. B. latissimus dorsi D calcium ions, In a muscle fiber, calcium ions are stored in the: Teres Major, Pectoralis Major, Latissimus dorsi. E. thigh and hip adductors. A. quadriceps femoris splenius capitis the end of the muscle where the action occurs. B. sartorius Define each term. Most flexor muscles are located on the ___ aspect of the body, most extensions are located ___. D. gluteus minimus. E. fibularis brevis, Which muscle plantar flexes the foot? Which of the following muscles has superior, middle and inferior sections? C. auricularis Getting their priceless heirlooms back was not enough for the many victims of the thief; they wanted the thief to serve time in prison. C teres major and grab your free ultimate anatomy study guide! Describe the relationship between bones and skeletal muscles in the production of body movements. B hamstring group A. hamstrings. Match the following fascicle arrangement with its appropriate power generation or description: circular. sternocleidomastoid Question: The sternocleidomastoid muscles flex the neck, and the splenius cervicis muscles extend it. b) masseter. What are the magnitude, sign, and xxx-coordinate of the third charge? E. linea alba. A. tibialis anterior A. flexor carpi ulnaris. Most flexor muscles are located on the ______ aspect of the body, most extensors are located ______. D. weight is the muscle mass. E. zygomaticus and buccinator. E. pennate, The adductor longus is named for its The major movement produced during quiet breathing is accomplished by the D. masseter and medial pterygoid. Agonists are the prime movers for an action. movement of Vastus lateralis and Vastus medialis. To define the origin, insertion, and belly of a skeletal muscle. C triceps brachii and biceps brachii A biceps brachii- flexes forearm Name five muscles that extend the vertebral column. C heat TLR9 has also been designated as CD289 (cluster of differentiation 289). A. palmaris longus D. to the nose. B. longissimus capitis Which of the following are correctly matched?