Ch 7 multiple choice

Which has its insertion on the four tendons to the bases of middle and distal phalanxes of the four fingers on the dorsal surface of the hand?

Extensor digitorum

Which has its origin on the lateral epicondyle of the humerus?

Extensor digitorum

Performs extension of the index finger

Extensor indicis

Performs wrist extension

Extensor indicis, ext pollicis longus, ext digitorum

Which of the following muscles perform adduction of the wrist?

Flexor carpi ulnaris

Performs an action in the frontal plane

abd pollicis longus

may not be palpated on the dorsal aspect of the hand

abd pollicis longus

Performs abd of the thumb

Abductor pollicis longus

Which of the following muscles can be palpated just proximal to the dorsal aspect of the wrist?

Extensor carpi radialis longus

Which of the following muscles perform abduction of the wrist?

Extensor carpi radialis longus

Which of the following muscles flexes the distal interphalangeal joints of the fingers?

Flexor digitorum profundus

Which of the following muscles performs flexion of the thumb?

Flexor pollicis longus

Which of the following statements is not true regarding the wrist and hand joints? -Forms 16 phalanges -Composed of 29 bones -Contains more than 25 joints -Composed of more than 30 muscles

Forms 16 phalanges

origin of flexor digitorum profundus

Proximal 3/4 of medial and anterior surfaces of ulna and interosseous membrane

insertion of extensor carpi radialis longus

base of 2nd metacarpal

insertion of the extensor carpi radialis brevis

base of 3rd metacarpal

insertion of extensor carpi ulnaris

base of 5th metacarpal

insertion of the flexor digitorum profundus

base of the distal phalanxes of the four fingers

Proximal interphalangeal joint motion occurs about the ____ axis

frontal

The 3rd metacarpophalangeal joint moves in which planes?

frontal, saggital

The wrist joint moves through the ____ plane about the _____ axis with ulnar and deviation.

frontal, sagittal

origin of flexor carpi radialis

medial epicondyle of humerus

origin of the palmaris longus

medial epicondyle of humerus

origin of flexor pollicis longus

middle anterior surface radius

In order to obtain the greatest amount of active wrist extension you should place the fingers in ____

relaxed flexion