Flex Your Knowledge with this Wrist Joints Quiz

1. What is the anatomical name for the wrist joint?

Radiocarpal joint

Carpometacarpal joint

Metacarpophalangeal joint

Proximal interphalangeal joint

The anatomical name for the wrist joint is the radiocarpal joint. This term refers to the articulation between the radius bone and the carpal bones.

Explanation

The anatomical name for the wrist joint is the radiocarpal joint. This term refers to the articulation between the radius bone and the carpal bones.

2. Which bone of the wrist is most commonly fractured?

Scaphoid

Triquetrum

Lunate

Pisiform

The scaphoid bone is the most commonly fractured bone in the wrist. Due to its location and shape, it is prone to injury during falls and accidents. Prompt diagnosis and treatment are crucial to prevent long-term complications.

Explanation

The scaphoid bone is the most commonly fractured bone in the wrist. Due to its location and shape, it is prone to injury during falls and accidents. Prompt diagnosis and treatment are crucial to prevent long-term complications.

3. Which ligament stabilizes the wrist joint on the palmar side?

Scapholunate ligament

Radial collateral ligament

Ulnar collateral ligament

Palmar radiocarpal ligament

The palmar radiocarpal ligament stabilizes the wrist joint on the palmar side. It connects the radius bone to the carpal bones, preventing excessive movement and maintaining joint stability.

Explanation

The palmar radiocarpal ligament stabilizes the wrist joint on the palmar side. It connects the radius bone to the carpal bones, preventing excessive movement and maintaining joint stability.

4. Which nerve is responsible for sensation in the palm and fingers?

Median nerve

Radial nerve

Ulnar nerve

Phrenic nerve

The median nerve is responsible for sensation in the palm and fingers. It supplies innervation to the thumb, index finger, middle finger, and half of the ring finger, facilitating tactile perception and fine motor control.

Explanation

The median nerve is responsible for sensation in the palm and fingers. It supplies innervation to the thumb, index finger, middle finger, and half of the ring finger, facilitating tactile perception and fine motor control.

5. Which bones form the wrist joint?

Carpals

Metacarpals

Phalanges

Radius and ulna

The wrist joint is formed by the carpal bones. These eight small bones are arranged in two rows, connecting the forearm bones (radius and ulna) to the metacarpal bones of the hand.

Explanation

The wrist joint is formed by the carpal bones. These eight small bones are arranged in two rows, connecting the forearm bones (radius and ulna) to the metacarpal bones of the hand.

6. How many degrees of freedom does the wrist joint have?

One

Two

Three

Four

The wrist joint has two degrees of freedom. This means it allows movement in two main planes: flexion/extension (bending and straightening the wrist) and radial/ulnar deviation (sideways movement).

Explanation

The wrist joint has two degrees of freedom. This means it allows movement in two main planes: flexion/extension (bending and straightening the wrist) and radial/ulnar deviation (sideways movement).

7. Which type of joint is the wrist joint?

Hinge joint

Pivot joint

Gliding joint

Ball and socket joint

The wrist joint is classified as a gliding joint. This type of joint allows for limited motion in various directions, enabling the hand to perform a wide range of movements.

Explanation

The wrist joint is classified as a gliding joint. This type of joint allows for limited motion in various directions, enabling the hand to perform a wide range of movements.

8. Which tendon passes through the carpal tunnel within the wrist?

Flexor digitorum profundus

Extensor digitorum

Palmaris longus

Flexor pollicis longus

The flexor digitorum profundus tendon passes through the carpal tunnel within the wrist. This tendon is responsible for flexing the fingers and is surrounded by various other tendons and structures within the carpal tunnel.

Explanation

The flexor digitorum profundus tendon passes through the carpal tunnel within the wrist. This tendon is responsible for flexing the fingers and is surrounded by various other tendons and structures within the carpal tunnel.

9. What is the primary motion of the wrist joint?

Flexion

Extension

Rotation

Circumduction

The primary motion of the wrist joint is circumduction. This movement involves a combination of flexion, extension, abduction, and adduction, allowing the hand to draw circles and perform complex manipulations.

Explanation

The primary motion of the wrist joint is circumduction. This movement involves a combination of flexion, extension, abduction, and adduction, allowing the hand to draw circles and perform complex manipulations.

10. What is the medical term for inflammation of the wrist joint?

Tendinitis

Arthritis

Synovitis

Carpal tunnel syndrome

The medical term for inflammation of the wrist joint is synovitis. It refers to the inflammation of the synovial membrane, a thin layer that lines the joint and produces synovial fluid for lubrication and nourishment.

Explanation

The medical term for inflammation of the wrist joint is synovitis. It refers to the inflammation of the synovial membrane, a thin layer that lines the joint and produces synovial fluid for lubrication and nourishment.