All things brachial plexus 2.0

Question 1

What is the name of the nerve and the spinal cord levels of the nerve that innervates the rhomboids and elevator scapulae

Answer 1

dorsal scapular nerve

C5

Question 2

What is the name of the nerve and the spinal cord levels of the nerve that innervates the supraspinatus and infraspinatus?

Answer 2

suprascapular nerve

C5/C6

Question 3

What is the name of the nerve and the spinal cord levels of the nerve that innervates the subclavius muscle?

Answer 3

Subclavian nerve

C5/C6

Question 4

What is the name of the nerve and the spinal cord levels of the nerve that innervates the pectorals major muscle? What cord does this come off of?

Answer 4

Lateral pectoral nerve: C5/C6/C7 off of the lateral cord and the
Medial pectoral nerve: C5/C6/C& off of the medial cord

Question 5

What is the name of the nerve and the spinal cord levels of the nerve that innervates the serratus anterior?

Answer 5

Long thoracic

C5/C6/C7

Question 6

What is the name of the nerve and the spinal cord levels of the nerve that innervates the coracobrachialis, biceps brachii, and brachialis?

Answer 6

Musculocutaneous

C5/C6/C7

Question 7

What is the name of the nerve and the spinal cord levels of the nerve that innervates the skin of the lateral forearm?

Answer 7

Lateral antebrachial cutaneous nerve

C5/C6/C7

Question 8

What is the name of the nerve and the spinal cord levels of the nerve that innervates the subscapularis muscle?

Answer 8

Superior and Inferior sub scapular nerve

C5/C6

Question 9

What is the name of the nerve and the spinal cord levels of the nerve that innervates the Pectoralis minor?

Answer 9

Medial pectoral

C8/T1

Question 10

What is the name of the nerve and the spinal cord levels of the nerve that innervates the skin of the medial arm?

Answer 10

medial brachial cutaneous nerve

C8/T1

Question 11

What is the name of the nerve and the spinal cord levels of the nerve that innervates the skin of the medial forearm?

Answer 11

Medial antebrachial cutaneous

C8/T1

Question 12

What is the name of the nerve and the spinal cord levels of the nerve that innervates the latissimus dorsi?

Answer 12

Thoracodorsal

C6/C7/T1

Question 13

What is the name of the nerve and the spinal cord levels of the nerve that innervates the subscapularis?

Answer 13

Superior and Inferior Subscapular nerves

C5/C6

Question 14

What is the name of the nerve and the spinal cord levels of the nerve that innervates the teres major?

Answer 14

Inferior subscapular nerve

C5/C6

Question 15

What are the terminal branches of the lateral cord? And where does it go?

Answer 15

Musculocutaneous: goes to the anterior brachium muscles

Median nerve goes to the upper extremity

Question 16

What are the terminal branches of the posterior cord and where do they go?

Answer 16

Axillary nerve goes to the deltoid and the teres minor as well as the skin to the lateral arm

Radial nerve goes to the upper extremity on the posterior side through the radial groove of the humerus

Question 17

What are the terminal branches of the medial cord and where does it go?

Answer 17

Ulnar nerve

C8/T1

Question 18

What are the contents of the quadrangular space? And where do they go?

Answer 18

Axillary nerve that is going to the deltoids and the posterior circumflex humeral that is also going to the deltoids

Question 19

What are the nerves that branch off of the lateral cord? (just the cord part)

Answer 19

Lateral pectoral and the branching of the median nerve

Question 20

What are the nerves that branch off of the posterior cord?

Answer 20

Superior and inferior subscapular nerves

Thoracodorsal nerve

Question 21

What are the nerves that come off the medial cord?

Answer 21

Medial pectoral nerve and the medial brachial cutaneous

Question 22

What are the nerves that come off of the superior trunk?

Answer 22

Suprascapular and the subclavian nerve

Question 23

What is special about the supra scapular nerve?

Answer 23

It goes underneath the transverse scapular ligament