Forearm Muscles: Anterior

Question 0

Inersertion of Pronator Teres

Answer 0

Lateral middle convexity of Radius

Question 1

Origin of Pronator Teres

Answer 1

Coronoid Process of Ulna

Medial Epicondyle of Humerus

Question 2

Innervation of Pronator Teres

Answer 2

Median Nerve

C6, C7

Question 3

Action of Pronator Teres

Answer 3

Pronates and Flexes Forearm

Question 4

Flexor Carpi Radialis

Answer 4

Origin: Medial Epicondyle of Humerus
Insertion: base of 2nd metacarpal
Innervation: Median Nerve C6, C7
Action: flexes and abducts hand at wrist

Question 5

Palmaris Longus

Answer 5

O: Medial epicondyle of humerus
In: distal half of flexor retinaculum and palmar aporneurosis
Inv: Median Nerve C7, C8
A: flexes hand at wrist, tenses palmar ap.

Question 6

Flexor Carpi Ulnaris

Answer 6

O: Olecranon and posterior border of Ulna
Ins: pisiform, hook of hamate, 5th metacarpal
Inv: Ulnar nerve, C7, C8
A: flexes and adducts hand at wrist

Question 7

Flexor Digitorum Superficialis

Answer 7

O: Medial epicondyle of humerus & coronoid process ulna; radial head on oblique line of radius
Ins: shafts of middle phalanges 4 medial fingers
Inv: Median Nerve C7,C8
Action: flexes wrist joint and 4 proximal IC joints

Question 8

Flexor Digitorum Profundus

Answer 8

O: anterior surface of ulna & Interosseous memb
Ins: bases of distal phalanges 2-5 digits
Inv:
Lateral: (2&3) Median Nerve C8 & T1
Medial: (4&5) Ulnar C8 & T1

A: flexes wrist joint; flexes distal IP joints (2-5)

Question 9

Flexor Pollicis Longus

Answer 9

O: anterior surface of radius & interosseous memb
Ins: distal phalanx of thumb
Inv: Anterior Interosseous nerve from Median nerve
A: flex wrist, MP & IP joints of thumb

Question 10

Pronator Quadratus

Answer 10

O: anterior surface of ulna
Ins: anterior surface of radius
Inv: anterior Interosseous nerve from median nerve
A: pronates forearm; deep fibers bind radius and ulna together
- especially when upward thrusts are thransmitted through wrist,
like when falling