Origin of the Pronator Teres
Medial epicondyle of humerus
Coronoid process of ulna
Insertion of pronator teres
Middle of lateral surface of radius
What does the pronator teres do?
Pronates and flexes the forearm at the elbow
What innervates the pronator teres?
Median nerve
Origin of the flexor carpi radialis
medial epicondyle of humerus
Insertion of the flexor carpi radialis
Bases of 2nd and 3rd metacarpals
What does the flexor carpi radials do?
Flexes the wrist and radial deviation
What innervates the flexor carpi radialis?
Median nerve (C6, C7)
Origin of palmaris longus
Medial epicondyle of humerus
Insertion of palmaris longus
Distal half of flexor retinaculum and palmar aponeurosis
What does the palmaris longus do?
Flexes hand (at wrist) and tightens palmar aponeurosis
What innervates the palmaris longus?
Median nerve
Origin of the flexor carpi ulnaris
Medial epicondyle of humerus
Olecranon and posterior border of ulna
Insertion of the flexor carpi ulnaris
Pisiform
Hook of hamate
5th metacarpal
What does the flexor carpi ulnaris do?
Flexes wrist and ulnar deviation (adducts) at the wrist
What innervates the flexor carpi ulnaris?
Ulnar nerve
Origin of the flexor digitorum superficialis
Medial epicondyle of humerus
Superior half of anterior border of radius
Insertion of flexor digitorum superficialis
Bodies of middle phalanges of 2nd – 5th digits
What does the flexor digitorum superficialis?
Flexes proximal phalanges at metacarpophalangeal joints and hand (strongest)
Flexes middle phalanges at proximal interphalangeal joints of medial four digits
What innervates the flexor digitorum superficialis?
Median nerve
Origin of the flexor digitorum profundus
Proximal 3/4 of medial and anterior surfaces of ulna and interosseous membrane
Insertion of the flexor digitorum profundus
Base of the distal phalanx of digits 2nd – 5th
What does the flexor digitorum profundus do?
Flexes distal phalanges at distal interphalangeal joints of medial four digits; assists with flexion of hand
What innervates the flexor digitorum profundus?
Medial part: ulnar nerve
Lateral part: median nerve
Origin of the flexor pollicis longus
Anterior surface of radius and adjacent interosseous membrane
Insertion of the flexor pollicis longus
Base of distal phalanx of thumb
What does the flexor pollicis longus do?
Flexes phalanges of 1st digit (thumb)
What innervates the flexor pollicus longus?
Median nerve
Origin of the pronator quadratus
Distal 1/4 of anterior surface of ulna
Insertion of the pronator quadratus
Distal 1/4 of anterior surface of radius
What does the pronator quadratus do?
Pronates forearm
Deep fibers bind radius and ulna together
What innervates the pronator quadratus?
Median nerve
