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