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