Chapter 7-kines
Which of the following is the primary function of the extensor pollicis longus muscle?
Extension of the thumb
Which of the following is the origin of the flexor digitorum profundus muscle?
Proximal three-fourths of the anterior and medial ulna
Which of the following muscles may not be palpated on the dorsal aspect of the hand?
The abductor pollicis longus muscle
Which of the following is the insertion of the flexor digitorum profundus muscle?
The base of the distal phalanxes of the four fingers
Which of the following is the insertion of the extensor carpi radialis brevis muscle?
The base of the third metacarpal on the dorsal surface
Which of the following muscles performs abduction of the wrist?
The extensor carpi radialis longus muscle
Which of these muscles may be palpated just proximal to the dorsal aspect of the wrist and approximately 1 cm medial to the radial styloid?
The extensor carpi radialis longus muscle
Which of the following muscles inserts on the four tendons to bases of middle and distal phalanxes of the four fingers on the dorsal surface?
The extensor digitorum muscle
Which of the following muscles originates on the lateral epicondyle of the humerus?
The extensor digitorum muscle
Which of the following muscles performs extension of the index finger at the metacarpophalangeal joint?
The extensor indicis muscle
Which of the following muscles performs adduction of the wrist?
The flexor carpi ulnaris muscle
Which of the following is the only muscle that flexes the finger distal interphalangeal joint (DIP) joints?
The flexor digitorum profundus muscle
Which of the following muscles performs flexion of the thumb?
The flexor pollicis longus muscle
A gamekeeper's or skier's thumb is a common injury that involves a sprain of the ___________ of the thumb metacarpophalangeal joint and may require surgery when severely sprained.
ulnar collateral ligament
Essentially all of the wrist and finger extensors are innervated by the:
radial nerve.
Which of the following is the primary function of the extensor digiti minimi muscle?
Extension of the little finger at the metacarpophalangeal joint
Which of the following is the origin of the flexor carpi radialis muscle?
Medial epicondyle of the humerus
Which of the following muscles performs actions in the frontal plane about the sagittal axis?
The abductor pollicis longus muscle
Which of the following is the insertion of the extensor carpi radialis longus muscle?
The base of the second metacarpal on the dorsal surface
Disruption of a tendon at or near the insertion of the ________ is known as a jersey or sweater finger and should be addressed surgically within approximately one week.
flexor digitorum profundus muscle
