Sensory/Cutaneous Innervation of Upper Extremities

Question 1

Skin over shoulder/clavicle is supplied by:

Answer 1

Supraclavicular nerves (C3 and C4) from cervical plexus

Question 2

What is the sensory/cutaneous innervation of the arm:
Laterally:
Posteriorly:
Medially and Anteriorly (2)?

Answer 2

Laterally: Lateral cutaneous nerve of the arm
Posteriorly: Posterior cutaneous nerve of the arm
Medially and Anteriorly: Medial cutaneous brachial nerve, intercostaobrachial nerve

Question 3

What is the sensory/cutaneous innervation of the hand:
Anteriorly (2):
Posteriorly (2):

Answer 3

Anteriorly: Ulnar and median nerve
Posteriorly: Ulnar and radial nerve

Question 4

What is the sensory/cutaneous innervation of the forearm:
Laterally:
Posteriorly:
Medially:

Answer 4

Laterally: Lateral cutaneous nerve of the forearm
Posteriorly: posterior cutaneous nerve of the forearm
Medially: medial cutaneous nerve of the forearm

Question 5

What is the motor innervation of the supraspinatus and infraspinatus muscle?

Answer 5

Suprascapular nerve

Question 6

What is the motor innervation of the subscapularis?

Answer 6

Upper and lower subscapular nerves

Question 7

What is the motor innervation of the Teres minor and deltoid?

Answer 7

Axillary nerve

Question 8

What is the motor innervation of the teres major?

Answer 8

Lower subscapular nerve

Question 9

What is the motor innervation of the trapezius?

Answer 9

accessory nerve (CN IX)

Question 10

What is the motor innervation of the latissimus dorsi?

Answer 10

middle subscapular/thoracodorsal nerve

Question 11

What is the motor innervation of the pectoralis minor?

Answer 11

medial pectoral nerve

Question 12

What is the motor innervation of the pectoralis major

Answer 12

medial and lateral pectoral nerve

Question 13

What is the motor innervation of the levator scapulae?

Answer 13

Dorsal scapular nerve and ventral rami of C3, C4

Question 14

What is the motor innervation of the rhomboid major and minor?

Answer 14

dorsal scapular nerve

Question 15

What is the motor innervation of the serratus anterior?

Answer 15

long thoracic nerve

Question 16

What is the motor innervation of the anterior compartment of the arm?

Answer 16

Musculocutaneous nerve

Question 17

What is the motor innervation of the posterior compartment of the arm?

Answer 17

Radial nerve

Question 18

What is the motor innervation of the anterior compartment of the forearm?

Answer 18

median, ulnar, and radial nerve

Question 19

What is the motor innervation of the posterior compartment of the forearm?

Answer 19

radial nerve