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