Arm & Elbow

Question 1

Biceps Brachii Origin

Answer 1

Origin: SHORT HEAD: tip of coracoid process of scapula

LONG HEAD: Supraglenoid tubercle of scapula

Question 2

Biceps Brachii Insertion

Answer 2

Insertion: Radial Tuberosity and bicipital aponeuorsis

Question 3

Biceps Brachii Action

Answer 3

Action: Supinates forearm and when it is supinated, flexes elbow. Also flexes shoulder joint, short head resists

Question 4

Biceps Brachii Innervation

Answer 4

Innervation: Musculocutaneous nerve (C5, C6)

Question 5

Brachialis Origin

Answer 5

Origin: distal half of anterior surface of humerus

Question 6

Brachialis Insertion

Answer 6

Insertion: coronoid process and tuberosity of ulna

Question 7

Brachialis Action

Answer 7

Action: flexes elbow joint in all positions

Question 8

Brachialis Innervation

Answer 8

Innervation: Musculocutaneous C5, C6

Question 9

Coracobrachialis Origin

Answer 9

Origin: Tip of coracoid process of scapula

Question 10

Coracobrachialis Insertion

Answer 10

Insertion: Middle third of medial surface of humerus

Question 11

Coracobrachialis Action

Answer 11

Action: Helps flex and adduct shoulder joint, resist dislocation

Question 12

Coracobrachialis Innervation

Answer 12

Innervation: Musculocutaneous nerve C5,C6,C7

Question 13

Triceps Brachii Origin

Answer 13

Origin: LONG HEAD: infraglenoid tubercle of scapula
LATERAL HEAD: posterior surface of humerus, superior to radial groove
MEDIAL HEAD: posterior surface of humerus, inferior to radial groove

Question 14

Triceps Brachii Insertion

Answer 14

Insertion: proximal end of olecranon of ulna and fascia of forearm

Question 15

Triceps Brachii Action

Answer 15

Action: Chief extensor of elbow. LONG HEAD: extends and adducts.

Question 16

Triceps Brachii Innervation

Answer 16

Innervation: Radial nerve C6, C7, C8

Question 17

Median Cubital Vein connects what two structures?

Answer 17

Cephalic Vein and Basilic vein