Arm, Forearm

Question 1

What inserts to the radial tuberosity?

Answer 1

biceps brachii

Question 2

What inserts to the ulnar tuberosity?

Answer 2

Brachialis

Question 3

Dermatomes of the forearm?

Answer 3

C5, C6, C7, C8, T1

Question 4

what inserts to the corticoid process?

Answer 4

Pectoralis minor, corocobrachialis, short head of biceps brachii

Question 5

bicipital aponeurosis:

Answer 5

Thickening of the fascia; overlies and protects in particular the brachial artery and the median nerve during venipuncture.

Question 6

Primary function of biceps brachii

Answer 6

Flexion and supinaiton

Question 7

Primary function of coracobrachialis

Answer 7

Flexion and ADDuction the arm

Question 8

Primary function of brachialis

Answer 8

Main flexor of the forearm

Question 9

Lateral head of triceps brachii

Answer 9

Strongest generation of force, primary against active resistance, not passive.

Question 10

Medial head of triceps brachii

Answer 10

passive resistance of triceps, isotonic, workforce, deep to lateral head.

Question 11

Long head of triceps brachii

Answer 11

least active, primarily extension; since it crosses the glenoidhumeral joint, it is the only of the three that can extend the arm in addition of the forearm.

Question 12

Three muscles that make up the floor of where the brachial artery runs through:

Answer 12

1. Long head of triceps
2. Corocobrachialis
3. Brachialis

Question 13

Three main branches of brachial artery:

Answer 13

1. Deep brachial (profunda brachii) - runs in radial grove posteriorly; passes through the triangular interval
2. Superior ulnar collateral
3. Inferior ulnar collateral

Question 14

Three important nerves associated with brachial artery:

Answer 14

Radial, ulnar and median n.

Question 15

Three veins associated with brachial artery:

Answer 15

2- venae comitantes and basilic vein.

Question 16

Innervation of brachioradialis:

Answer 16

Radial Nerve

Question 17

Innervation of brachialis:

Answer 17

musculocutaneous AND radial nerve.

Question 18

Which muscle is the most powerful flexor of the forearm?

Answer 18

Brachialis- due to its insertion on the ulnar tuberosity.

Question 19

Flexors of the elbow innervates by what nerve?

Answer 19

Flexors: biceps brachii, corocobrachialis and brachialis, innervates by the musculocutaneous nerve.