part of kin 250 exam 2 terms

Which of the following muscles performs abduction of the thumb

abductor pollicis longus

The extensor carpi radialis brevis is responsible for the following movements at the wrist joint: [x1], and abduction.

extension

The extensor carpi radialis longus muscle can perform weak extension of the elbow when contracting concentrically

false

The flexor digitorum superficialis performs its action in the frontal plane

false

Which of the following is the origin of the flexor carpi radialis

medial epicondyle of humerus

the extensor carpi radials braves muscle can be stretched by

passive flexion and slight adduction of the wrist with the elbow extended and the forearm pronated

has the following attachments- origin: middle to distal one-third of the posterior ulna; insertion: base of the middle and distal phalanxes of the second phalange on the dorsal side

extensor indicis

has the following attachments- origin: posterior surface of the lower middle radius; insertion: base of the proximal phalanx of the thumb on the dorsal surface.

extensor pollicis brevis

The interphalangeal joints are classified as [x1].

ginglymus

Which of the following is the origin of the palmaris longus

medial epicondyle of the humerus

The primary movements of the flexor pollicis longus include flexion of the the wrist, metacarpophalangeal, and interphalangeal joints, as well as wrist [x1].

abduction

Which of the following muscles performs abduction of the wrist

extensor carpi radialis longus

has the following attachments- origin: distal third of the lateral supracondylar ridge of the humerus and the lateral epicondyle of the humerus; insertion: base of the second metacarpal on the dorsal surface

extensor carpi radialis longus

is the common action of the flexor digitorum profundus at the wrist, metacarpophalangeal, and interphalangeal joints.

flexion

The flexor pollicis longus is located lateral with respect to flexor digitorum profundus

true

The interphalangeal joints may be actively flexed to a greater degree with the wrist in slight extension as opposed to full flexion

true

The movements of the extensor pollicis brevis include extension of the thumb at the carpometacarpal and metacarpophalangeal joints, and wrist [x1].

abduction

The primary movements of the flexor carpi radialis at the wrist are flexion and [x1].

abduction

Movement of the fingers back together toward the middle finger is called [x1].

adduction

The primary movements of the extensor carpi ulnaris on the wrist joint are extension and

adduction

The primary movements of the extensor carpi ulnaris on the wrist joint are extension and [x1].

adduction

The movements of the abductor pollicis longus include abduction and [x1] of the thumb at the carpometacarpal joint, and weak wrist extension.

extension

The primary function of the extensor pollicis longus muscle is

extension of the thumb

has the following attachments- origin: lateral epicondyle of the humerus; insertion: base of the third metacarpal on the dorsal surface.

extensor carpi radialis brevis

has the following attachments- origin: lateral epicondyle of the humerus; insertion: base of the middle and distal phalanxes of the fifth phalange on the dorsal surface

extensor digiti minimi

is the primary action of the palmaris longus.

flexion

has the following attachments- origin: medial epicondyle of the humerus; insertion: base of the second and third metacarpals on the palmar surface.

flexor carpi radialis

has the following attachments- origin: medial epicondyle of the humerus and the posterior aspect of the proximal ulna; insertion: base of the fifth metacarpal (palmar surface), pisiform, and hamate.

flexor carpi ulnaris

has the following attachments- origin: proximal three-fourths of the anterior and medial ulna; insertion: base of the distal phalanges of the four fingers

flexor digitorum profundus

has the following attachments- origin: medial epicondyle of the humerus, medial coronoid process, upper two-thirds of the anterior border of the radius just distal to the radial tuberosity; insertion: each tendon splits and attaches to the sides of the middle phalanx of the four fingers on the palmar surface

flexor digitorum speficials

has the following attachments- origin: medial epicondyle of the humerus; insertion: palmar aponeurosis of the second, third, fourth, and fifth metacarpals.

palmaris longus

The only muscle involved in extending all of the metacarpophalangeal and interphalangeal joints of the four fingers is the extensor digitorum

true

the extensor carpi radialis longus, like the extensor carpi radialis brevis, is important in any sports activity that requires powerful

wrist extension