Homework Answers
16. d) Triceps brachii
The main function of the triceps brachii muscle is to extend the forearm at the elbow joint.
17. a) Thenar eminence.
The thenar musculature consists of four muscles, named abductor pollicis brevis, adductor pollicis, flexor pollicis brevis, and opponens pollicis. Located on the radial side of the palm, they form together the 'ball' of the thumb known as the thenar eminence.
18. d) Sartorius.
The sartorius muscle is the longest muscle in the entire human body. It is a long, thin, band-like muscle found in the anterior region of the thigh. The sartorius functions as an important flexor and rotator of the thigh at the hip joint.
Rest of the muscles mentioned in options are involved in moving of spinal cord.
19. a) Palmaris longus.
Palmaris longus is a muscle that can be found partly in the forearm, wrist, and hand. It has two functions. A minor function is to help flex the hand at the wrist. A more major function is to tense and tighten the palmar aponeurosis.
Supinator perfroms supination of the arm. Other options are extensors.
20. c) Biceps femoris
Long head of Biceps femoris is involved in extension of thigh.
Other muscles given are flexors of thigh.
21. b) Dorsiflexion
The key function of the muscles of the anterior compartment of the lower limb that move foot and toe is dorsiflexion.
22. a) Plantar interosseous
The plantar interossei comprise the fourth and final plantar muscle layer. The plantar interossei have a unipennate morphology.
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238 EXERCISE TEN - Muscular System 16. Which is not a flexor of the forearm? (a)...
orrectly label the intrinsic muscles of the foot. Flexor hallucis brevis Dorsal interosseous Quadratus plantae (cut)...
orrectly label the intrinsic muscles of the foot. Flexor hallucis brevis Dorsal interosseous Quadratus plantae (cut) Abductor hallucis (cut) Adductor hallucis Flexor digitorum longus tendon (cut) Flexor hallucis longus tendon (cut) Flexor digiti minimi brevis Plantar interosseous
Really need help! Thanks. 8-12. Complete the following table with at least one answer in each...
Really need help! Thanks. 8-12. Complete the following table with at least one answer in each box. Muscle Action Synergist Antagonist Extensor carpi radialis longus Abductor pollicis brevis none Flexor carpi ulnaris, flexor digitorum profundus and superficialis Laterally rotates and adducts humerus, stabilizes shoulder joint Abducts thumb none Teres major, supraspinatus Supinator Extensor carpi radialis longus and brevis Flexes phalanges, flexes wrist Triceps brachii Infraspinatus Flexes and abducts wrist Extensor carpi radialis longus and extensor carpi ulnaris Flexor pollicis brevis...
types of proteins that appear as 59) Which of the following muscles of facial expression are...
types of proteins that appear as 59) Which of the following muscles of facial expression are considered sphincters? A) levator and depressor labii B) masseter and temporalis C) risorius and zygomaticus D) orbicularis oculi and orbicularis oris E) superior and inferior obliques 54) Which of the following muscles supirate(s) the forearm? A) abductor pollicis longus B) ancones and triceps brachii C) biceps brachii and supinator D) extensor carpi ulnaris E) flexor digitorum profundus valu wtates the thigh?
19. Label with letters/arrows: a. olecranon of ulna b. anconeus muscle c. supinator muscle d. pronator...
19. Label with letters/arrows: a. olecranon of ulna b. anconeus muscle c. supinator muscle d. pronator teres muscle (insertion) e. abductor pollicis longus muscle f extensor pollicis longus muscle g. extensor pollicis brevis muscle h. extensor indicis muscle i. tendon of insertion of extensor carpi ulnaris muscle (belly has been removed) tendon of insertion of extensor carpi radialis j. longus muscle tendon of insertion of extensor carpi radialis k. brevis muscle 1. carpal extensor retinaculum m. n. body of ulna...
Review Sheet 13 227 Muscles of the Lower Limb 9. Using the terms from the key...
Review Sheet 13 227 Muscles of the Lower Limb 9. Using the terms from the key on the right correctly identify all muscles provided with leader lines in the illustrations below à adductor longus b. extensor digitorum longus fibularis longus d gastrocnemius e rectus femoris sartorius f. Soleus h. tensor facia lata i vastus lateralis vastus medialis 10. Use the key terms in question 9 to respond to the descriptions below. 1. "tailor's muscle 5. posterior compartment muscles that plantar...
muscle is located and performs of the hip. 8. The iliopsoas is A. medially; adduction B....
muscle is located and performs of the hip. 8. The iliopsoas is A. medially; adduction B. laterally; abduction C. anteriorly; flexion D. posteriorly; extension 9. The origin of the rectus femoris muscle is the anterior inferior iliac spine of the iliunm the groove above the A. ischiumm B. acetabulum C. fascia D. linea aspera of the hip. 10. The pectineus muscle is located A. medially; intemal rotation B. laterally; abduction C. anteriorly; flexion D. posteriorly; extension 11. Which of the...
Elbow Flexion: biceps brachii, brachialis, and brachioradialis muscles Hip Flexion: iliopsoas, sartorius muscles Extension: biceps femoris,...
Elbow Flexion: biceps brachii, brachialis, and brachioradialis muscles Hip Flexion: iliopsoas, sartorius muscles Extension: biceps femoris, semitendinosus, semimembranosus, and gluteus maxim Abduction: tensor fasciae latae, sartorius, and gluteus medius muscles Adduction: gracilis and adductor muscles I Knee Flexion: biceps femoris, semitendinosus, semimembranosus, and gastrocnemius muscles .Extension: rectus femoris, vastus medialis, vastus intermedius, and vastus lateralis Ankle Dorsiflexion: tibialis anterior muscle Plantarflexion: gastrocnemius and soleus muscles Inversion: tibialis anterior and tibialis posterior muscles Eversion: fibularis brevis and fibularis longus muscles ke...
MUSCULAR SYSTEM Skeletal muscles allow our bodies to bend, walk, sit, chew and talk. Humans have...
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1. In the context of the pelvic girdle motions, which of the following statements is true...
1. In the context of the pelvic girdle motions, which of the following statements is true of the right lateral pelvic rotation? A. It is characterized by a left lateral tilt. B. It is accomplished by right lumbar and lateral flexion left hip abduction in the frontal plane C. The right pelvis moves inferiorly in relation to the left pelvis in the frontal plane D. Either the left pelvis rotates downward or the right pelvis rotates upward. 2. In the...
B. Thigh Movements Select the muscle(s) from the list that is (are) described by 1 the...
B. Thigh Movements Select the muscle(s) from the list that is (are) described by 1 the statements below. 2. adductor brevis adductor longus adductor magnus gluteus maximus gluteus medius gluteus minimus piriformis 3b 3c. 1. Extends and rotates thigh laterally. 2. Abducts and rotates thigh laterally. 3. Three muscles that adduct, flex, and rotate thigh laterally 4. Two muscles that abduct and rotate thigh medially. 5. Strongest adductor muscle. 6. Superficial buttocks muscle. 7. Innermost gluteus muscle. 8. Longest adductor...
orrectly label the intrinsic muscles of the foot. Flexor hallucis brevis Dorsal interosseous Quadratus plantae (cut) Abductor hallucis (cut) Adductor hallucis Flexor digitorum longus tendon (cut) Flexor hallucis longus tendon (cut) Flexor digiti minimi brevis Plantar interosseous
types of proteins that appear as 59) Which of the following muscles of facial expression are considered sphincters? A) levator and depressor labii B) masseter and temporalis C) risorius and zygomaticus D) orbicularis oculi and orbicularis oris E) superior and inferior obliques 54) Which of the following muscles supirate(s) the forearm? A) abductor pollicis longus B) ancones and triceps brachii C) biceps brachii and supinator D) extensor carpi ulnaris E) flexor digitorum profundus valu wtates the thigh?
19. Label with letters/arrows: a. olecranon of ulna b. anconeus muscle c. supinator muscle d. pronator teres muscle (insertion) e. abductor pollicis longus muscle f extensor pollicis longus muscle g. extensor pollicis brevis muscle h. extensor indicis muscle i. tendon of insertion of extensor carpi ulnaris muscle (belly has been removed) tendon of insertion of extensor carpi radialis j. longus muscle tendon of insertion of extensor carpi radialis k. brevis muscle 1. carpal extensor retinaculum m. n. body of ulna...
Review Sheet 13 227 Muscles of the Lower Limb 9. Using the terms from the key on the right correctly identify all muscles provided with leader lines in the illustrations below à adductor longus b. extensor digitorum longus fibularis longus d gastrocnemius e rectus femoris sartorius f. Soleus h. tensor facia lata i vastus lateralis vastus medialis 10. Use the key terms in question 9 to respond to the descriptions below. 1. "tailor's muscle 5. posterior compartment muscles that plantar...
muscle is located and performs of the hip. 8. The iliopsoas is A. medially; adduction B. laterally; abduction C. anteriorly; flexion D. posteriorly; extension 9. The origin of the rectus femoris muscle is the anterior inferior iliac spine of the iliunm the groove above the A. ischiumm B. acetabulum C. fascia D. linea aspera of the hip. 10. The pectineus muscle is located A. medially; intemal rotation B. laterally; abduction C. anteriorly; flexion D. posteriorly; extension 11. Which of the...
Elbow Flexion: biceps brachii, brachialis, and brachioradialis muscles Hip Flexion: iliopsoas, sartorius muscles Extension: biceps femoris, semitendinosus, semimembranosus, and gluteus maxim Abduction: tensor fasciae latae, sartorius, and gluteus medius muscles Adduction: gracilis and adductor muscles I Knee Flexion: biceps femoris, semitendinosus, semimembranosus, and gastrocnemius muscles .Extension: rectus femoris, vastus medialis, vastus intermedius, and vastus lateralis Ankle Dorsiflexion: tibialis anterior muscle Plantarflexion: gastrocnemius and soleus muscles Inversion: tibialis anterior and tibialis posterior muscles Eversion: fibularis brevis and fibularis longus muscles ke...
MUSCULAR SYSTEM Skeletal muscles allow our bodies to bend, walk, sit, chew and talk. Humans have more than 600 muscles in their bodies. Muscles are named in various ways: by the action they perform (extensor, flexor): by their size (maximus, minimus), or length (brevis, longus); by their shape (deltoid, trapezius); for their origin(s) or insertion(s) (sternocleidomastoid), or by the number of origins or insertions (triceps, biceps). In addition, they can be named for their location (abdominis, brachii) or the bones...
1. In the context of the pelvic girdle motions, which of the following statements is true of the right lateral pelvic rotation? A. It is characterized by a left lateral tilt. B. It is accomplished by right lumbar and lateral flexion left hip abduction in the frontal plane C. The right pelvis moves inferiorly in relation to the left pelvis in the frontal plane D. Either the left pelvis rotates downward or the right pelvis rotates upward. 2. In the...
B. Thigh Movements Select the muscle(s) from the list that is (are) described by 1 the statements below. 2. adductor brevis adductor longus adductor magnus gluteus maximus gluteus medius gluteus minimus piriformis 3b 3c. 1. Extends and rotates thigh laterally. 2. Abducts and rotates thigh laterally. 3. Three muscles that adduct, flex, and rotate thigh laterally 4. Two muscles that abduct and rotate thigh medially. 5. Strongest adductor muscle. 6. Superficial buttocks muscle. 7. Innermost gluteus muscle. 8. Longest adductor...
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