exph 2200 quiz 2

radioulnar joint...

trochoid (pivot-type joint)

elbow joint is...

ginglymus (hinge-type joint)

wrist joint...

condyloid-type joint

Elbow stability is locked when at full _______ and unlocked at > _______

extension, 20 degrees of flexion

Which of the following muscles performs extension of the wrist ?

extensor carpi radialis longus

Which of the following is the sole action of the brachialis muscle?

flexion of the elbow

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

frontal, sagittal

radius and ulna held together by...

interosseous membrane (syndesmosis)

extensor tendons bounds together by...

juncturae tendinae

common attachment of elbow extensors

lateral epicondyle

common attachment of elbow flexors

medial epicondyle

The muscles that perform radioulnar supination include all of the following except?

aconeus

Which of the following muscles performs adduction of the wrist?

flexor carpi ulnaris

Tightening a screw with a screwdriver using the right hand depends significantly upon the action of the _____.(significantly means I'm asking for the strongest/largest CSA)

biceps brachii

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 an easy tendon to harvest and use during a UCL reconstruction surgery ? (hint : it's absent in a small % of the population)

palmaris longus

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

scaphoid

The most commonly injured ligament in the elbow due to throwing is the ______.

ulnar collateral ligament

larger, more robust ligament of the UCL and RCL...

ulnar collateral ligament