OIAs Muscles that move the forearm (6)

Question 1

1. Flexors
   i. Biceps Brachii: has two heads, therefore two origins

Answer 1

1. O: coracoid process of scapula, tubercle above glenoid fossa
2. I: radial tuberosity of radius
3. A: flexes and supinates forearm, rotates the arm

Question 2

1. Flexors
   ii. Brachialis: beneath biceps brachii

Answer 2

1. O: shaft of humerus
2. I: coronoid process of ulna
3. A: strongest flexor of elbow

Question 3

1. Flexors
   iii. Brachioradialis – connects humerus to radius & aids in flexing elbow

Answer 3

1. O: distal end of humerus
2. I: radial styloid process
3. A: pronates and supinates forearm

Question 4

2. Extensor
   i. Triceps Brachii: has three heads, therefore three origins

Answer 4

1. O: tubercle below glenoid fossa, lateral & medial surface of humerus
2. I: Olecranon process of ulna
3. A: extend forearm