Deep muscles of anterior forearm (flexors) Flashcards
Insertion of Flexor Digitorum Superficialis
Shafts(bodies) of middle phalanges of medial four digits
Origin of Flexor Digitorum superficialis (Intermediate layer)
Humero-ulnar head: Medial epicondyle of humerus and coronoid process of ulna
Radial Head: Oblique line of radius
Innervation of Flexor Digitorum Superficialis
Median Nerve (C7, C8, T1)
Action of Flexor Digitorum Superficialis
Flexes wrist joint
Flexes proximal interphalangeal joints of middle four digits; acting more strongly, it also flexes proximal phalanges at metacarpophalangeal joints.
Origin of Flexor Digitorum profundus
Proximal three quarters of medial and anterior surfaces of ulna and interosseous membrane
Insertion of Flexor Digitorum Profundus
Bases of distal phalanges of 2nd, 3rd, 4th, and 5th digits
Innervation of Flexor Digitorum Profundus
Lateral part(to digts 2 and 3) median nerve (C8, T1)
Medial pat(to digits 4 and 5) Ulnar nerve (C8, T1)
Action of Flexor Digitorum profundus
Flexes wrist joint
Flexes distal interphalangeal joints of digits 2, 3, 4, and 5.
assists in wrist flexion
Origin of Flexor Pollicis Longus
Anterior surface of radius and adjacent interosseous membrane
Insertion of Flexor Pollicis Longus
Base of distal phalanx of thumb
Innervation of Flexor pollicis longus
Anterior interosseous nerve from median nerve (C8, T1)
Action of Flexor Pollicis Longus
Flexes wrist
Flexes metacarpophalangeal and interphalangeal joints of thumb
Origin of Pronator Quadratus
Distal quarter of anterior surface of ulna
Insertion of Pronator Quadratus
Distal quarter of anterior surface of radius
Innervation of Pronator Quadratus
Anterior interosseous nerve from median nerve (C8, T1)