Wrist and Hand Practice Textbook Quiz - Chapter 5, Biomechanics

Which of the following joints is not capable of circumduction?

• distal interphalangeal

• metacarpophalangeal

• wrist

• glenohumeral

Distal interphalangeal (DIP) joint

Movement of the wrist into abduction is anatomically known as…

• ulnar deviation

• radial deviation

• flexion

• extension

Radial deviation

Which one of the following carpal bones is in the distal row of carpals?

• hamate

• scaphoid

• pisiform

• lunate

Hamate

The structure known as the anatomical snuffbox is formed by the tendons of the extensor pollicis brevis and the…

• flexor pollicis longus

• abductor pollicis longus

• extensor pollicis longus

• adductor pollicis longus

Abductor pollicis longus

The lumbricales, located deep within the hand, both extend the interphangeal joints and flex the…

• metacarpophalangeal joints

• intercarpal joints

• carpometacarpal joints

• midcarpal joints

Metacarpophalangeal (MCP) joints

Which of the following muscles does not originate on the common extensor tendon?

• extensor carpi ulnaris

• extensor carpi radialis longus

• extensor digitorum

• extensor carpi radialis brevis

Extensor carpi radialis longus

The muscles of the forearm that flex and extend only the wrist insert of either the carpal bones or the…

• metacarpals

• proximal phalanges

• middle phalanges

• distal phalanges

Metacarpals

The hypothenar eminence is formed by muscles that move the…

• thumb

• index finger

• little finger

• ring finger

Little finger

Which of the following carpal bones is also known as the navicular bone?

• pisiform

• scaphoid

• hamate

• lunate

Scaphoid

Which of the following muscles does not originate on the common flexor tendon?

• flexor carpi ulnaris

• flexor digitorum superficialis

• flexor digitorum profundus

• flexor carpi radialis

Flexor digitorum profundus

Which of the following muscles is considered an extrinsic muscle of the little finger?

• extensor digiti minimi

• flexor digiti minimi brevis

• abductor digiti minimi

• opponens digiti minimi

Extensor digiti minimi

Which of the following joints is considered biaxial?

• interphalangeal

• proximal interphalangeal

• metacarpophalangeal

• distal interphalangeal

Metacarpophalangeal

Which of the following muscles is not considered an intrinsic muscle of the thumb (thenar eminence)?

• flexor pollicis brevis

• abductor pollicis brevis

• flexor pollicis longus

• adductor pollicis

flexor pollicis longus

The opponens pollicis muscle moves the thumb…

• toward the little finger

• toward the radius

• into flexion

• into extension

Toward the little finger

Which of the following movements is not considered a fundamental movement of the wrist?

• flexion

• ulnar deviation

• radial deviation

• circumduction

Circumduction

The only flexor muscle of the wrist whose tendon of insertion does not pass under the flexor (volar) retinaculum is the…

Palmaris longus

Extension of the wrist occurs primarily at what joints?

Radiocarpal and midcarpal joints

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

Flexors

The thenar eminence is formed by the intrinsic muscles of the…

Thumb

Flexion of the wrist primarily occurs at what joints?

Radiocarpal joint and midcarpal joint

Ulnar deviation of the wrist in the frontal plane is otherwise also known as what of the wrist?

Adduction

The extensor indicis extends the MP, PIP, and DIP joints of the…

Index finger

The most lateral carpal bone of the proximal carpal row is what bone?

Scaphoid

The movement of the thumb that allows grasping of objects is known as…

Opposition

The radiocarpal joint is the articulation between the radius, the lunate, and what bone?

Scaphoid

The band of tissue at the wrist that keeps the wrist and hand flexor muscles from rising up under tension is known as the…

Flexor retinaculum

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

Collateral (radial and ulnar)

The joints between the bones of the wrist and the bones of the hand are known as what joints?

Carpometacarpal

The bone lying directly beneath the anatomical snuffbox is the carpal bone known as the…

Scaphoid