KIN 245 - (Ch.7)

Muscles that are considered to be wrist extensors include the extensor carpi radialis longus, extensor carpi radialis brevis, and extensor carpi radialis.

False

Radial flexion is movement of thumb side of hand toward medial aspect or radial side of forearm.

False

The flexor pollicis longus may be palpated on the posterior surface of the thumb.

False

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

Flexion

All of the wrist flexor muscles generally have their origins located on the anteromedial aspect of the proximal forearm and the medial epicondyle of humerus.

True

Motions of the finger metacarpophalangeal joints include flexion, extension, abduction, and adduction.

True

Motions of the wrist joint include flexion, extension, abduction and adduction.

True

Muscles that are considered to be wrist flexors include the flexor carpi radialis, flexor carpi ulnaris, and palmaris longus.

True

Opposition is movement of the thumb across palmar aspect to oppose any or all of the phalanges.

True

The extensor carpi ulnaris and flexor carpi ulnaris are the prime movers in ulnar deviation.

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 muscles that are considered to be the agonists of phalangeal flexion include flexor digitorum superficialis, flexor digitorum profundus, and flexor pollicis longus.

True

Ulnar flexion is movement of little finger side of hand toward medial aspect or ulnar side of the forearm.

True

The primary movements of the extensor carpi radialis longus at the wrist include extension and ___.

abduction

The primary movements of the flexor carpi radialis at the wrist are flexion and ___.

abduction

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

abduction / unlar deviation / ulnar flexion

Which of the following muscles does not perform wrist extension?

abductor pollicis longus

Which of the following muscles performs abduction of the thumb?

abductor pollicis longus

Which of the following muscles performs an action in the frontal plane?

abductor pollicis longus

Movement of the fingers back together toward the middle finger is called ___.

adduction

Movement of the back of the hand and/or the phalanges toward the posterior or dorsal aspect of the forearm is termed ___.

extension / hyperextension

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

extensor carpi radialis brevis / extensor carpi radialis brevis muscle

The ___ 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

Which of the following muscles performs abduction of the wrist?

extensor carpi radialis longus

Which of these muscles may be palpated just proximal to the dorsal aspect of the wrist?

extensor carpi radialis longus

Which of the following muscles performs extension of the index finger?

extensor indicis

Movement of the palm of the hand and/or the phalanges toward the anterior or volar aspect of the forearm is termed ___.

flexion / palmar flexion

The ___ 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

Which of the following muscles performs adduction of the wrist?

flexor carpi ulnaris

The ___ has the following attachments- origin: middle anterior surface of the radius and anterior medial border of the ulna just distal to the coronoid process; insertion: base of the distal phalanx of the thumb on the palmar surface.

flexor pollicis longus

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

frontal, sagittal

Movement of the thumb as it returns to the anatomical position from opposition with the hand and/or fingers is termed ___.

reposition

The ___ has the following attachments- origin: posterior aspect of the radius and midshaft of the ulna; insertion: base of the first metacarpal on the dorsal lateral surface.

abductor pollicis longus / abductor pollicis longus muscle

Movement of the little finger side of the hand toward the medial aspect or ulnar side of the forearm is termed ___.

adduction

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

adduction

The primary movements of the flexor carpi ulnaris at the wrist are flexion and ___.

adduction

Which of the following is the insertion of the extensor carpi radialis longus?

base of 2nd metacarpal

Which of the following is the insertion of the extensor carpi radialis brevis?

base of 3rd metacarpal

Which of the following is the insertion of the extensor carpi ulnaris?

base of 5th metacarpal

The metacarpophalangeal joints are classified as ___.

condyloid

The wrist joint is classified as a ___ joint.

condyloid

The movements of the extensor digiti minimi include extension of the little finger at the metacarpophalangeal joint, and wrist .

extension

The movements of the extensor digiti minimi include extension of the little finger at the metacarpophalangeal joint, and wrist ___

extension

The movements of the extensor digiti minimi include extension of the little finger at the metacarpophalangeal joint, and wrist ___.

extension

The movements of the extensor indicis include extension of the index finger at the metacarpophalangeal joint, and wrist ___.

extension

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

extension

The movements of the extensor pollicis longus include extension of the thumb at the carpometacarpal, metacarpophalangeal, and interphalangeal joints, as well as wrist ___.

extension

The ___ has the following attachments- origin: lateral epicondyle of the humerus and the middle one-half of the posterior border of the ulna; insertion: base of the fifth metacarpal of the dorsal surface.

extensor carpi ulnaris

The ___ has the following attachments- origin: lateral epicondyle of the humerus; insertion: four tendons to the bases of the middle and distal phalanxes of the four fingers on the dorsal surface.

extensor digitorum

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

extensor digitorum

The ___ 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 / extensor pollicis brevis muscle

The ___ 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

The ___ 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 superficialis

Which of the following is the origin of the palmaris longus?

medial epicondyle of the humerus

Which of the following is the origin of the flexor pollicis longus?

middle anterior surface of the radius

Movement of the thumb across the palmar aspect to oppose any or all of the phalanges is termed ___.

opposition