Anatomy - Forearm Muscles
What is the proximal attachment of Flexor pollicis longus?
Anterior surface of radius, adjacent interosseous membrane.
What is the proximal attachment of Pronator teres?
Medial epicondyle of humerus and coronoid process of ulna.
What is the proximal attachment of Flexor carpi radialis?
Medial epicondyle of humerus, (common flexor origin).
What is the innervation of the 1st layer forearm flexor muscles?
Median nerve for all of them except flexor carpi ulnaris which is ulnar nerve.
What is the distal attachment of Pronator teres?
Middle convexity of lateral surface of radius.
What is the distal attachment of Flexor carpi ulnaris?
Pisiform, hook of hamate, 5th metacarpal.
What does Pronator quadratus do?
Pronates forearm. Deep fibers bind the radius and ulna together.
What is the proximal attachment of Flexor digitorum profundus?
Proximal three quarters of medial & anterior surfaces of ulna & interosseous membrane.
What is the distal attachment of Flexor carpi radialis?
Base of 2nd metacarpal.
What is the distal attachment of Palmaris longus?
Base of 2nd metacarpal.
What is the distal attachment of Flexor digitorum profundus?
Base of distal phalanges of digits 4 & 5. Base of distal phalanges of digits 2 & 3.
What is the distal attachment of Flexor pollicis longus?
Base of distal phalanx of thumb.
What are the extensors of the forearm?
Brachioradialis Extensor carpi radialis longus Extensor carpi radialis brevis Extensor digitorum Extensor digiti minimi Extensor carpi ulnaris
What is the distal attachment of Pronator quadratus?
Distal quarter of anterior surface of radius.
What is the proximal attachment of Pronator quadratus?
Distal quarter of anterior surface of ulna.
What muscles connect to the lateral epicondyle of the humerus? (Hint: Common Extensor Origin)
Extensor carpi radialis brevis Extensor digitorum Extensor digiti minimi Extensor carpi ulnaris Supinator
What does Flexor carpi ulnaris do?
Flexes & adducts hand at wrist.
What does Flexor carpi radialis do?
Flexes and abducts the hand at the wrist.
What does Pronator teres do?
Flexes and pronates the forearm at the elbow.
What does Flexor digitorum profundus do, and what is it's innervation?
Flexes distal phalanges 2-5 at distal interphalangeal joints. Innervated by ulnar nerve.
What does Palmaris longus do?
Flexes hand at wrist, and tenses palmar aponeurosis.
What does Flexor digitorum superficialis do?
Flexes middle phalanges at proximal I.C.P. joint of middle 4 digits. Flexes proximal phalanges at M.C.P. joints.
What does Flexor pollicis longus do?
Flexes phalanges of the 1st digit.
What is the proximal attachment of Flexor digitorum superficialis?
Humeroulnar head: Medial epicondyle of humerus, (common flexor origin). Radial head: Superior half of anterior border of radius.
What is the proximal attachment of Palmaris longus?
Medial epicondyle of humerus, (common flexor origin).
What is the proximal attachment of Flexor carpi ulnaris?
Olecranon & posterior border of ulna.
What is the distal attachment of Flexor digitorum superficialis?
Shafts of middle phalanges of medial 4 digits.
