Kinesiology test

Including the thumb, how many interphalangeal joints are in one anatomically normal hand?

9

The articulation between the wrist and the forearm occurs between the radius and the

Carpals

The wrist is stabilized by ligaments known as the

Collateral ligaments

Beneath the space known as the anatomical snuffbox lies the lunate carpal bone.

False

Extension of the wrist primarily occurs at the radiocarpal joints.

False

The bands of tissue at the wrist that keep the flexor muscles and the extensor muscles from rising up under tension are known as the dorsal and volar aponeuroses.

False

The extensor indicis extends the metacarpophalangeal, proximal interphalangeal, and distal interphalangeal joints of the middle finger.

False

The tendons passing through the structure known as the carpal tunnel are primarily considered the wrist and hand extensors

False

The thenar eminence is formed by the intrinsic muscles of the little finger

False

Which of the following muscles is considered an intrinsic muscle of the hand?

Interossei

The distal row of carpal bones articulates with the

Metacarpals

Which of the following wrist flexors does not pass beneath the flexor retinaculum?

Palmaris longus

The metacarpals articulate with the

Phalanges

Flexion of the wrist occurs primarily at the radiocarpal joints.

True

The lumbricales muscles assist with both flexion of the MP joints and extension of the PIP and DIP joints.

True

The most lateral carpal bone of the proximal carpal row is the scaphoid.

True

The only flexor muscle of the wrist that does not have its tendon of insertion passing under the flexor (volar) retinaculum is the palmaris longus.

True

The palmaris longus is not considered a prime mover regarding flexion of the wrist.

True

The wrist joint is stabilized on the medial and lateral sides by collateral ligaments from the radius and ulna.

True

Ulnar deviation of the wrist in the frontal plane is also known as adduction of the hand.

True

The dorsal interossei muscles perform which of the following metacarpophalangeal joint actions?

abduction

The volar (palmar) interossei muscles perform which of the following metacarpophalangeal joint actions?

adduction

Which of the following muscles is not considered an extrinsic muscle of the thumb?

adductor pollicis

The relationship between the ulnar styloid process and the radial styloid process is such that the radial styloid process is most

distal

Which of the following muscles is not considered part of the common extensor tendon originating on the lateral epicondyle of the humerus?

extensor carpi radialis longus

Which of the following muscles extends the wrist and four fingers?

extensor digitorum

The lumbricales originate on the tendons of the flexor digitorum profundus and insert on the tendons of the

extensor digitorum communis

Which of the following muscles has as its primary function extension of the index finger?

extensor indicis

Extension of the thumb is the function of the

extensor pollicis longus

Which of the following muscles flexes the wrist and four fingers?

flexor digitorum superficialis

From the anatomical position, thumb abduction and adduction occur in the sagittal plane, while thumb flexion and extension take place in the

frontal plane

In addition to the adductor pollicis and flexor pollicis brevis, which of the following muscles assists the thumb in gripping?

opponens pollicis

A movement unique to the thumb that allows for grasping is known as

opposition

A muscle found just proximal to the wrist that is involved in the action that "turns down" the forearm and the palm of the hand is the

pronator quadratus

Bands of tissue forming bridges over the carpal bones of the wrist under which the flexor and extensor tendons from the forearm run to the hand are known as the:

retinacula

The primary function of the extensor indicis is to extend the MP joint of the index finger and also assist with

wrist extension