EWH Flexors

Question 1

Anconeus

Answer 1

O: lateral epicondyle of humerus
I: Olecranon of ulna
N: Radial N (C6, C7, C8)
F: accessory extensor of the elbow joint

Question 2

Pronator Teres

Answer 2

O: 
- medial epicondyle of the humerus 
- coronoid process of the ulna
I: lateral radius
N: Median N (C6, C7)
F: Pronation

Question 3

Flexor carpi radialis

Answer 3

O: medial epicondyle of humerus
I: base of MC II & III
N: Median N (C6, C7)
F: flexes and radially deviates the wrist

Question 4

Palmaris Longus

Answer 4

O: medial epicondyle of humerus
I: palmar aponeurosis
N: Median N (C7, C8)
F: flexes wrist joint

Question 5

Flexor carpi ulnaris

Answer 5

O: 
- medial epicondyle of humerus 
- olecranon of the ulna
I: 
- pisiform bone 
- hook of hamate
- base of MC V
N: Ulnar N (C7, C8, T1)
F: flexes and ulnarly deviates wrist joint

Question 6

Flexor digitorum superficialis

Answer 6

O: 
- medial epicondyle of humerus
- coronoid process of ulna
- radius 
I: sides of middle phalanges of digits 2-5
N: Median N (C8, T1)
F: 
- flexes proximal interphalangeal (PIP) joints and metacarpophalangeal joint (MCP) of digits 2-5
- flexes wrist

Question 7

Flexor digitorum profundus

Answer 7

O:
- ulna
- interosseous membrane
I: distal phalanges of digits 2-5 (palmar surface)
N:
- lateral half: median N (anterior interosseus N)
- medial half: ulnar N (C8, T1)
F:
- flexes distal interphalangeal (DIP) joints and metacarpophalangeal (MCP) joints of digits 2-5
- flexes wrist

Question 8

Flexor pollicis longus

Answer 8

O:
- radius
- interosseous membrane
I: distal phalanx of the thumb (palmar surface)
N: median N (anterior interosseous N) (C7, C8)
F: flexes interphalangeal (IP) joint and metacarpophalangeal (MCP) joint of thumb

Question 9

Pronator quadratus

Answer 9

O: distal quarter of ulna
I: distal radius (anterior surface)
N: median N (anterior interosseous N) (C7, C8)
F: pronation