Arm

Question 1

How many compartments are there in upper arm ?

Answer 1

2
(Anterior and posterior compartments)

Question 2

Name the Root value of musculocutaneous nerve

Answer 2

Ventral Rami of C5-C7 segment

Question 3

Name the muscles supplied by MCN

Answer 3

1.Coracobrachialis
2.Biceps brachii
3.Brachialis

Question 4

Origin of MCN

Answer 4

Lateral cord of brachial plexus in lower part of axilla

Question 5

Termination of MCN

Answer 5

It terminated by continuing as lateral cutaneous nerve of forearm 2 cm above elbow

Question 6

Which part of axillary artery does MCN belong to ?

Answer 6

3rd part

Question 7

Course of MCN

Answer 7

Enters front of arm by piercing the coracobrachialis muscle.
It then runs downwards and laterally btw biceps brachii and brachial is muscle to reach the lateral side of tendon of the biceps.

Question 8

Muscles of anterior compartment of arm

Answer 8

1. Coracobrachialis
2. Biceps brachii
3. Brachialis

Question 9

Muscles of posterior compartment of arm

Answer 9

Triceps brachii

Question 10

The anterior and posterior compartments muscle groups are separated by

Answer 10

Medical and lateral intermuscular septum

Question 11

Relations of MCN

Answer 11

A- pectoralis major
P-Subscapularis
M-Axillary artery and lateral root of median nerve
L-Coracobrachialis

Question 12

How many branches does MCN have ?

Answer 12

4
(Muscular,cutaneous,articular, communicating)

Question 13

Name of cutaneous branch of MCN

Answer 13

Lateral cutaneous nerve

Question 14

Nerve supply of triceps brachii muscle

Answer 14

Radial Nerve(C7-C8)

Question 15

Brachial artery was a part of which artery before

Answer 15

Axillary artery

Question 16

Origin of brachial artery

Answer 16

Lower border of teres major

Question 17

Insertion of brachial artery

Answer 17

Neck of radius in the cubital fossa by dividing into its two terminal branches, the radial and ulnar arteries.