Mucles of anterior compartment of arm Flashcards
Insertion of Flexor digitorum superficialis
Shafts of middle phalanges of medial 4 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
Flex wrist
Flex proximal interphalangeal joint of middle 4 digits
Also flexes proximal phalanges at metacarpophalageal joint
Origin of Flexor digitorum profundus
Proximal three quarters of medial and anterior surface of ulna and interosseous membrane
insertion of Flexor digitorum profundus
Bases of distal phalanges of 2nd 3rd 4th and 5th digit
Innervation of Flexor digitorum profundus
Lateral part(digit 2 and 3): Median nerve (C8 T1) Medial part (digits 4 and 5) ulnar nerve C8 T1
Action of Flexor digitorum profundus
Flexes wrist joint
Flexes distal interphalangeal joint of digits 2 3 4 5
Assist wrist with 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 C8 T1
Action of Flexor Pollicis Longus
Flex wrist
Flex metacarpophalangel and interphalangeal joints of thumb
Origin of Pronators quadratus
Distal quarter of anterior surface of ulna
Insertion of Pronator Quadratus
Distal quarter of anterior surface of radius
Inervation of Pronator quadratus
Anterior interosseous nerve from median nerve C8 T1