Arm

Question 0

Coracobrachialis

Answer 0

O: coracoid process of scapula
I: Medial surface of humerus (midway)
IN: Musculocutaneous
AC: Adduct and flexes arm

Question 1

Biceps brachii

Answer 1

O: Short head_coracoid process of scapula
Long head_supraglenoid tubercle of scapula
I: Radial tuberosity on radius, antebrachial fascia via bicipital aponeurosis
Innervation: Musculocutaneous
Actin: Supinates and flexes forearm

Question 2

Brachialis

Answer 2

O: Anterior surface of the humerus (distal half)
I: Ulnar tuberosity
IN: Musculocutaneous
AC: Flexes forearm

Question 3

Triceps brachii

Answer 3

O: Long head_infraglenoid tubercle of scapula
Medial head_posterior humerus inferior to radial groove
Lateral head_posterior humerus superior to radial groove
I: Olecranon of ulna
IN: Radial
AC: Extends forearm (**Long head can also extend arm.)