Brachial Plexus to Elbow

Question 1

Where does the long head of biceps brachii attach on to superiorly?

Answer 1

Superior glenoid tubercle (running up the inter-tubercular grove)

Question 2

Where does the short head of biceps brachii attach on to superiorly?

Answer 2

Coracoid process of scapula

Question 3

Where does the biceps brachii muscle attach on to inferiorly?

Answer 3

Radial tuberosity

Question 4

Where does the brachialis muscle attach on to inferiorly?

Answer 4

Ulnar tuberosity

Question 5

Where does the long head of triceps brachii muscle attach onto superiorly?

Answer 5

Inferior glenoid tuberosity

Question 6

Where does the triceps brachii muscle attach onto inferiorly?

Answer 6

Olecranon process of elbow

Question 7

In-between which muscles within the posterior triangle of the neck does the brachial plexus emerge from?

Answer 7

Anterior and middle scalene

Question 8

Which nerve innervates teres minor?

Answer 8

Axillary nerve

Question 9

Which muscles does the suprascapular nerve innervate?

Answer 9

Supraspinatous

Infraspinatous

Question 10

Which muscles of the shoulder are NOT innervated by a branch of the brachial plexus? What is their innervation?

Answer 10

Trapezius
Levator scapulae
Innervated by CN XI - accessory nerve

Question 11

Which nerve penetrates coracobrachialis? What is its continuation beyond this point?

Answer 11

Musculocutaneous nerve

Continuation is the lateral cutaneous nerve of arm

Question 12

Where does the profunda brachii artery (branch of the brachial) travel?

Answer 12

Posteriorly around the humerous and along the radial grove

Question 13

What does the biceps jerk test?

Answer 13

C5 and C6 reflex arcs