Test 2-Ch. 12 Wrist Joint

Which muscle originates on the lateral epicondyle and inserts on the base of the fifth metacarpal? a. Extensor carpi ulnaris c. Flexor carpi ulnaris b. Extensor carpi radialis longus d. Palmaris longus

A. Extensor carpi ulnaris

The flexor carpi radialis and flexor carpi ulnaris are agonists in which of the following motions? a. Flexion c. Radial deviation b. Ulnar deviation d. A and C

A. Flexion

When the extensor carpi ulnaris and flexor carpi ulnaris contract simultaneously, which motions are neutralized? a. Flexion and extension of the wrist c. Wrist circumduction b. Radial and ulnar deviation d. None of the above

A. Flexion and extension of the wrist

Which muscle originates on the medial epicondyle of the humerus and inserts on the palmar fascia? a. Palmaris longus c. Flexor carpi ulnaris b. Extensor carpi radialis longus d. Extensor carpi ulnaris

A. Palmaris longus

The ligament that attaches to the styloid process of the radius and to the scaphoid and trapezium bones is the a. radial collateral ligament. c. dorsal radiocarpal ligament. b. ulnar collateral ligament. d. interosseous membrane.

A. radial collateral ligament

If the emphasis for the above exercise is eccentric strengthening, how would you instruct your client to pace the exercise? a. Emphasis on the "up" motion b. Emphasis on the "down" motion c. Both directions will work the muscle eccentrically. d. Emphasis on holding the wrist in neutral position for 5 to 10 seconds

B. Emphasis on the "down" motion

A person needing to stretch the wrist flexors needs to put the wrist in which of the following positions? a. Flexion b. Extension c. Radial deviation d. All of the above will stretch the wrist flexors.

B. Extension

If you are instructed to work on closed-chain upper extremity activity and you have your patient stand and place her hand on a table with her fingers facing forward and rock forward to touch an object with the other hand, which motion is occurring at the wrist that is on the table? a. Flexion c. Radial deviation b. Extension d. Ulnar deviation

B. Extension

Paralysis of the flexor carpi ulnaris muscle could indicate trauma to which of the following nerves? a. Median nerve c. Radial nerve b. Ulnar nerve d. Musculocutaneous nerve

B. Ulnar nerve

The PT plan of care directs you to do ISOM strengthening of the wrist extensors in a shortened position. To do this you would place the wrist in which of the following positions? a. Neutral c. Extension b. Flexion d. Any of the above would be correct.

C. Extension

Which muscle originates on the lateral epicondyle of the humerus and inserts at the base of the third metacarpal? a. Palmaris longus c. Extensor carpi radialis brevis b. Extensor carpi radialis longus d. Extensor carpi ulnaris

C. Extensor carpi radialis brevis

Which wrist muscle is the direct antagonist of the palmaris longus? a. Flexor carpi ulnaris c. Extensor carpi radialis brevis b. Extensor carpi ulnaris d. Pronator quadratus

C. Extensor carpi radialis brevis

Which muscle originates on the medial epicondyle of the humerus and inserts on the base of the second metacarpal? a. Extensor carpi radialis brevis c. Flexor carpi radialis b. Flexor digitorum profundus d. Extensor digitorum

C. Flexor carpi radialis

If a person repeatedly falls on an outstretched hand (extended wrist) while snowboarding, they are at increased risk for a sprain to which of the following ligaments? a. Radial collateral ligament c. Palmar radiocarpal ligament b. Ulnar collateral ligament d. Dorsal radiocarpal ligament

C. Palmar radiocarpal ligament

The three wrist extensors are innervated by which nerve? a. Median nerve c. Radial nerve b. Ulnar nerve d. Musculocutaneous nerve

C. Radial nerve

When teaching a client strengthening exercises for wrist radial deviation, which of the following is the BEST position to place him in to start the exercise? a. Seated with forearm on table, palm up b. Seated with forearm on table, palm down c. Seated with forearm on table, thumb up d. Seated with forearm on table, thumb down

C. Seated with forearm on table, thumb up

When the flexor carpi radialis and the extensor carpi radialis longus contract simultaneously, which motion results? a. Supination of the forearm c. Wrist radial deviation b. Wrist extension d. Wrist circumduction

C. Wrist radial deviation

The bony landmark located on the distal medial side of the humerus is the a. supracondylar ridge. c. medial condyle. b. lateral condyle. d. styloid process of the humerus.

C. medial condyle.