Muscles that MOVE the hand and wrist

Question 1

Flexor Carpi Radialis

Answer 1

ORIGIN

Medial epicondyle of humerus (common flexor tendon).

INSERTION

Bases of 2nd and 3rd metacarpals.

ACTION

Flexes and abducts wrist (radial deviation). INNERVATION

Median.

Question 2

Palmaris Longus

Answer 2

ORIGIN

Medial epicondyle of humerus (common flexor tendon).

INSERTION

Palmar aponeurosis and Flexor retinaculum. ACTION

Flexes wrist.

INNERVATION Median.

Question 3

Flexor Carpi Ulnaris

Answer 3

ORIGIN

Medial epicondyle of the humerus (common flexor tendon).

INSERTION

Pisiform, hamate, and base of 5th metacarpal. ACTION

Flexes and adducts wrist (ulnar deviation). INNERVATION

Ulnar.

Question 4

Extensor Carpi Ulnaris

Answer 4

ORIGIN

Lateral epicondyle of the humerus (common extensor tendon).

INSERTION

Base of 5th metacarpal. ACTION Extends and adducts wrist (ulnar deviation).

INNERVATION

Radial.

Question 5

Extensor Carpi Radialis Longus

Answer 5

ORIGIN

Lateral supracondylar ridge of humerus.

INSERTION

Base of 2nd metacarpal.

ACTION

Extends and abducts wrist (radial deviation). INNERVATION

Radial.

Question 6

Extensor Carpi Radialis Brevis

Answer 6

ORIGIN

Lateral epicondyle of the humerus (common extensor tendon).

INSERTION

Base of 3rd metacarpal.

ACTION

Extends and abducts wrist (radial deviation). INNERVATION

Radial.