Anterior Forearm Muscles

Question 1

Pronator Teres

Answer 1

Proximal: medial humeral supracondylar ridge & coronoid process of ulna
Distal: lateral mid-radius (pronator tuberosity)
Innervation: median nerve (C6-C7)
Blood supply: ulnar & radial artery
Functions: forearm pronation

Question 2

Flexor Carpi Radialis

Answer 2

Proximal: medial humeral epicondyle of humerus
Distal: base of 2nd & 3rd metacarpals 
Innervation: median nerve (C6-C7)
Blood supply: ulnar artery
Functions: wrist FLX & radial deviation

Question 3

Palmaris Longus

Answer 3

Proximal: medial epicondyle of humerus
Distal: palmar aponeurosis & flexor retinaculum
Innervation: median nerve (C6-C7)
Blood supply: anterior recurrent ulnar artery
Functions: wrist FLX & tenses palmar aponeurosis

Question 4

Flexor Carpi Ulnaris

Answer 4

Proximal: medial humeral epicondyle & olecranon
Distal: pisiform, hook of hamate, & 5th metacarpal
Innervation: ulnar nerve (C7-C8)
Blood supply: ulnar artery
Functions: wrist FLX & ulnar deviation

Question 5

Flexor Digitorum Superficialis

Answer 5

Proximal: medial humeral epicondyle, coronoid process, & inferior radial tuberosity
Distal: bilateral base of mid-phalanx of digits 2-5
Innervation: median nerve (C7-T1)
Blood supply: ulnar artery
Functions: wrist FLX & digits 2-5 MCP & PIP FLX

Question 6

Flexor Digitorum Profundus

Answer 6

Proximal: interosseous membrane & anterior medial ulna
Distal: base of distal phalanges of digits 2-5
Innervation: anterior interosseous nerve (digits 2&3)& ulnar nerve (digits 4&5)
(C8-T1)
Blood supply: ulnar artery & anterior interosseous artery
Functions: wrist flexion & digits 2-5 DIP flexion

Question 7

Flexor Pollicus Longus

Answer 7

Proximal: anterior radius & interosseous membrane
Distal: base of distal phalanx of thumb
Innervation: anterior interosseous nerve (C8-T1)
Blood supply: anterior interosseous artery
Functions: thumb interphalangeal joint FLX

Question 8

Pronator Quadratus

Answer 8

Proximal: anteromedial ulna & interosseous membrane
Distal: distal anterolateral radius
Innervation: anterior interosseous nerve (C8-T1)
Blood supply: ulnar artery & anterior interosseous artery
Functions: forearm pronation