week 5.2 course notes Flashcards
(9 cards)
what two things hold the flexor muscles that cross the wrist
the palmar carpal ligament and the flexor retinaculum (transverse carpal ligament)
pronator teres OINA
O: ulnar head: coronoid process of ulna, and the humeral head: medial epicondyle of humerus
I: middle convexity of lateral surface radius
N: median nerve
A: pronates and flexes weakly
FCR OINA
O: medial epicondyle
I: base of second metacarpal bone
N: median nerve
A: flexes and ABD (Radially deviates)
Palmaris longus OINA
O: medial epicondyle
I: flexor retinaculum and palmar aponeurosis
N: median nerve
A: flexes hand and tightens aponeurosis
FCU OINA
O: humeral head: medial epicondyle
ulnar head: olecranon and posterior border ulna
I: pisiform, hook hamate and 5th metacarpal
N: ulnar nerve
A: flexes hand and ADD (ulnar deviation)
FDS OINA
O: humero-ulnar: medial epicondyle and coronoid process of ulna
radial head: superior half and anterior border or radius
I: shafts of middle phalanges of medial 4 digits
N: median nerve
A: flex middle phalanges PIP joints, flexes proximal phalanges at MCP joints, flexes hand and wrist
FDP OINA
O: proximal three quarters of the medial and anterior surface of the ulna and interosseous membrane
I: medial: base of distal phalanges of 4 and 5, and lateral part: base of distal, 2 and 3.
N: medial part: ulnar and lateral: ant. interosseous (median nerve)
A: flex hand and wrist, and then flex the DIP, PIP and MCP
FPL OINA
O: anterior surface of the radius and interosseous membrane
I: base of the distal phalanx of the thumb
N: anterior interosseous nerve (median N).
A: flex distal phalanx of thumb at IP and flex proximal phalanx thumb at MCP joint
PQ OINA
O: distal quarter of anterior ulna,
I: distal quarter of anterior radius
N: anterior interosseous (median nerve)
A: pronates forearm, deep fibers bind radius and ulna together
