Muscles that act on the forearm

Question 1

Brachioradialis

Answer 1

Origin- lateral ridge at distal end of humerus
Insertion- styloid process of radius
Action- Synergist in forearm flexion

ALSO ACTS ON ELBOW JOINT

Question 2

Biceps Brachii

Answer 2

Origin-
SHORT HEAD: coracoid process
LONG HEAD: glenoid cavity
Insertion-by common tendon into radial tuberosity
Action-Flexes and supinates forearm

ALSO ACTS ON ELBOW JOINT

Question 3

Pronator Teres

Answer 3

Location: two-headed, seen in superficial view between brachioradialis and flexor carpi radialis
Action: Pronates forearmm

Question 4

Pronator Quadratus

Answer 4

Location: deepest muscle of distal forearm
Action: Prime mover of forearm pronation

Question 5

Supinator

Answer 5

Location: deep muscle at posterior aspect of elbow
Action: Assists biceps brachii to forcibly supinate forearmm