EX PHYS quiz

Tightening a screw with a screwdriver using the right hand depends significantly upon the action of the _____.

biceps brachialis

the elbow includes all of the following ligaments except the: A) radial collateral ligament.B) interosseus ligament.C) ulnar collateral ligament.D) annular ligament.

interosseous ligament

In the context of radioulnar joint movements, which of the following terms refers to the internal rotary movement of the radius on the ulna that results in the hand moving from the palm-up to the palm-down position?

supination

the carpal tunnel houses flexor tendons as well as the median nerve. what wrist flexor tendon does not pass through the carpal tunnel, making it easy tendon to harvest ands during UCL reconstruction surgery

?

the chief function of the ______ is to pull the synovial membrane of the elbow joint out of the way of the advancing olecranon process during extension of the elbow

anconeus muscle

elbow motions primarily involve movement between the.......

articular surfaces of the humerus and the ulna

elbow stability is locked when full ______and unlocked at >_______

extension; 20 degrees flexion

carpal tunnel syndrome is a condition in which there is increased pressure in the carpal tunnel, which interferes with the normal function of the median nerve

false

in anatomical position, the radius bus more medial than the ulna

false

in the context of wrist and hand movements, radial flexion refers to the movement of the thumb side of the hand toward the medial aspect or radial Side of the forearm

false

the most commonly injured ligament in the elbow due to the throwing is the _____

medial ulnar collateral ligament

of the carpal bones, which articulates with the radius and is critical in transfering force from the hand into the forearm

scaphoid

flexion of the elbow occurs in the ___ plane of motion, and supination of the forarm occurs in the ____ plane of motion

sagittal; transverse

In the context of wrist and hand movements, dorsiflexion refers to the movement of the back of the hand and/or the phalanges toward the posterior or dorsal aspect of the forearm.

true

as the elbow reaches full extension, the olecranon process of the ulna is received by the olecranon fossa of the humerus, and this provides increased joint stability

true

in the context of the wrist and hand movements, ulnar flexion refers to the movement of the little finger side of the hand towards the medial aspect or ulnar side of the forearm

true

in the context of the wrist joint include flexion, extension, abduction, and adduction

true

medial epoconfylitis is frequently referred to as the "golfers elbow"

true

positioning the forearm in pronation decreases the effectiveness of the biceps brachii muscle. in the flexing elbow.

true

the ulna is such larger proximally than the radius

true

the ulnar collateral ligament is critical to providing medial support to prevent the elbow from abducting when stressed in physical activity

true

the wrist flexor muscles have their origin on the medial epicondyle of the humerus

true