Muscles of anterior aspect of forearm (Distal layer) Flashcards
What are the muscles in the deep layer?
Flexor digitorum profundus (FDP)
Flexor policic longus (FPL)
Pronator quadratus
What is the proximal attachment of the flexor digitorum profundus?
Proximal three quarters of medial and anterior surfaces of ulna and interosseous membrane
What is the distal attachment of the medial part of the flexor digitorum profundus?
Bases of distal phalanges of 4th and 5th digits
What is the distal attachment of the lateral part of the flexor digitorum profundus?
Bases of distal phalanges of 2nd and 3rd digits
What is the innervation of the flexor digitorum profundus?
Ulnar nerve (C8, T1)
What is the main action of the medial part of the flexor digitorum profundus?
Flexes distal phalanges 4 and 5 at distal interphalangeal joints
What is the proximal attachment of the flexor pollicis longus?
Anterior surface of radius and adjacent interosseous membrane
What is the distal attachment of the flexor pollicis longus?
Base of distal phalanx of thumb
What is the innervation of the flexor pollicis longus?
Anterior interoseous nerve, from median nerve (C8, T1)
What is the main action of the flexor pollicis longus?
Flexes phalanges of 1st digit (thumb)
What is the main action of the lateral part of the flexor digitorum profundus?
Flexes distal phalanges 2 and 3 at distal interphalangeal joints
What is the proximal attachment of the pronator quadratis?
Distal quarter of anterior surface of ulna
What is the distal attachment of the pronator quadratis?
Distal quadratis of anterior surface of radius
What is the innervation of the pronator quadratis?
Anterior interoseous nerve, from median nerve (C8, T1)
What is the main action of the pronator quadratis?
Pronates forearm; deep fibers bind radius and ulna together
