URI Anatomy Quiz 12 Muscles of the Shoulder, Arm, etc
Quiz yourself by thinking what should be in
each of the black spaces below before clicking
on it to display the answer.
Help!
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| The teres major and coracobrachialis both _____. | adducts the arm (humerus)
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| The action of the subscapularis is _____. | medially rotates the arm (humerus)
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| The nerve supply to the anconeus muscle is the _____. | radial nerve
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| The muscle that extends the digits in humans is the _____. | extensor digitorum m
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| The action of the rhomboid muscles is _____, elevates the scapula, and rotates the scapula. | retracts (adducts) the scapula
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| The nerve supply to the flexor digitorum profundus muscle is _____. | half median nerve, half ulnar nerve
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| The extensor carpi radialis longus, extensor carpi radialis brevis, and _____ all abduct the hand. | extensor digitorum communis m.
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| The _____ is a muscle of the anterior compartment of the forearm found only in humans and not in cats. | palmaris longus m. (humans only)
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| The five muscles that move the arm are the _____, pectoralis major, latissimus dorsi, teres major, and coracobrachialis. | deltoid muscle
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| The five muscles that move the forearm are the _____, biceps brachii, brachioradilis, triceps brachii, and anconeus. | brachialis muscle
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| The _____ is the nerve supply for the extensor digitorum communis of humans. | radial nerve
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| The _____ is the nerve supply for the triceps brachii of humans. | radial nerve
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| The _____ is the nerve supply for the teres major of humans. | lower subscapular nerve
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| The _____ is the nerve supply for the latissimus dorsi of humans. | thoracodorsal nerve
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| The subscapularis has the following action: _____. | medially rotates the arm (humerus)
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| The lateral and medial heads of triceps brachii have the following action: _____. | extends the forearm
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| The pronator quadratus has the following action: _____. | pronates (medially rotates) forearm and wrist
(hand)
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| The flexor carpi radialis has its origin on the _____. | origin on the medial epicondyle of the humerus at the
common flexor tendon
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| The extensor carpi radialis brevis has its origin on the _____. | origin on the lateral epicondyle of the humerus at the
common extensor tendon
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