Chap 11

7) The triceps brachii muscle is opposed in extension of the elbow by the antagonistic muscle, ________. A) brachialis B) brachioradialis C) anconeus D) pronator teres E) extensor digitorum

A) brachialis

6) Which muscle flexes the wrist? A) supinator B) palmaris longus C) pronator teres D) brachialis E) anconeus

B) Palmaris longus

5) Inflammation of the extensor and flexor retinacula of the wrist can restrict movement and irritate the ________, resulting in carpal tunnel syndrome. A) musculocutaneous nerve B) median nerve C) ulnar nerve D) radial nerve E) axillary nerve

B) median nerve

4) The ________ muscle attaches to the radial tuberosity. A) supinator B) anconeus C) biceps brachii D) brachioradialis E) None of the answers are correct.

C) biceps brachii

1) Which of the following is a factor affecting appendicular muscle function? A) Muscles whose action lines cross the posterior aspect of the shoulder joint are extensors. B) Muscles whose action lines cross the anterior aspect of the shoulder joint may produce lateral flexion. C) Muscles whose action liens cross the inferior aspect of the shoulder joint may produce extension. D) Muscles whose action lines cross the posterior aspect of the shoulder joint may produce extension. E) Muscles whose action lines across the superior aspect of the shoulder joint are abductors.

D) Muscles whose action lines cross the posterior aspect of the shoulder joint may produce extension.

8) The forearm muscles that provide strength and gross control of the hand and fingers are innervated by the ________. A) radial, median, and musculocutaneous nerves B) median, musculocutaneous, and ulnar nerves C) ulnar, axillary, and median nerves D) median, radial, and ulnar nerves E) radial, axillary, and musculocutaneous nerves

D) median, radial and ulnar nerves

2) The muscles that form the rotator cuff include the ________. A) supraspinatus, infraspinatus, deltoid, and teres major B) biceps brachii and deltoid C) teres minor, infraspinatus, supraspinatus, and subscapularis D) pectoralis major, pectoralis minor, and subscapularis E) subclavius, deltoid, and pectoralis minor

D) pectoral is major/ minor and subscapularis

3) The origin of the deltoid muscle is (the) ________. A) clavicle B) scapula C) humerus D) vertebral column E) both the scapula and the clavicle.

E) both the scapula and the clavicle

9) All extensor muscles of the upper limb are innervated by the ________ nerve or a branch of that nerve. A) median B) ulnar C) musculocutaneous D) axillary E) radial

E) radial