chapter 20 Flashcards
what are the cutaneous supply of the arm?
1) Upper lateral brachial cutaneous nerve
2) Lower lateral brachial cutaneous nerve
3) medial brachial cutaneous nerve
4) posterior brachial cutaneous nerve
5) Intercosto-brachial cutaneous nerve
Origin: Termination of the AXILLARY NERVE
areas supplied: Upper lateral arm
Upper lateral brachial cutaneous nerve
origin: Posterior antebrachial cutaneous nerve (a branch of the radial nerve)
area supplied: LOWER lateral arm
Lower lateral brachial cutaneous nerve
origin: MEDIAL cord of brachial plexus
area supplied: Lower medial arm
Medial brachial cutaneous nerve
Origin: RADIAL NERVE
area supplied: Posterior arm
Posterior brachial cutaneous nerve
Origin: Lateral cutaneous branch of intercostal nerve 12
area supplied: UPPER medial arm
Intercosto-brachial cutaneous nerve
What are the cutaneous supply of the forearm
1) lateral antebrachial cutaneous nerve
2) posterior antebrachial cutaneous nerve
3) medial antebrachial cutaneous nerve
Origin: Termination of the MUSCULOCUTANEOUS nerve
Area supplied: Lateral forearm
Lateral antebrachial cutaneous nerve
Origin: RADIAL NERVE
area supplied: posterior forearm
Posterior antebrachial cutaneous nerve
Origin: MEDIAL CORD
area supplied: Medial forearm
Medial antebrachial cutaneous nerve
what are the structure of the cutaneous supply of the hand?
1) palmer branch of the median nerve
2) Digital branches of the median nerve
3) palmer branch of the ulnar nerve
4) Digital branches of the ulnar nerve
5) DORSAL branch of the ulnar nerve
6) SUPERFICIAL branch of the radial nerve
origin: Medial nerve
area supplied: LATERAL PALM
Palmer branch of the median nerve
origin: MEDIAN NERVE
area supplied: Lateral 3.5 digits anteriorly and their tips posteriorly
Digital branches of the median nerve
origin: Ulnar nerve
Area supplied: MEDIAL palm
Palmar branch of the ulnar nerve
Origin: SUPERFICIAL branches of the ulnar nerve
area supplied: Medial 1.5 digits, anteriorly
Digital branches of the ulnar nerve
origin: Ulnar nerve
area supplied: Dorsum of the medial 1.5 digits and hand
DORSAL branch of the ulnar nerve
Origin: RADIAL nerve
Area supplied: Skin of the lateral half of the dorsum of the hand, and the proximal portion of the lateral 3.5 digits, posteriorly
SUPERFICIAL branch of the radial nerve
1) Which of the following statements regarding the cutaneous nerves of the arm is INCORRECT?
a. The upper lateral brachial cutaneous nerve originates from the termination of the axillary nerve
b. The posterior brachial cutaneous nerve originates from the posterior cord of the brachial plexus
c. The lower lateral brachial cutaneous nerve originates from the posterior antebrachial cutaneous nerve
d. The intercosto-brachial cutaneous nerve supplies the upper medial arm
e. The posterior brachial cutaneous nerve is a direct branch of the radial nerve
b. The posterior brachial cutaneous nerve originates from the posterior cord of the brachial plexus
2) Match the cutaneous nerves of the forearm with their correct origin:
a. Medial antebrachial cutaneous nerve:
b. Lateral antebrachial cutaneous nerve:
c. Posterior antebrachial cutaneous nerve:
a) medial cord
b) termination of musculocutaneous nerve
c) Radial nerve
3) Which of the following statements regarding the cutaneous nerves of the hand is CORRECT?
a. The palmar branch of the median nerve supplies the medial palm
b. The digital branches of the median nerve supply the lateral 3.5 digits anteriorly and their tips posteriorly
c. Digital branches of the ulnar nerve supply the lateral 1.5 digits, anteriorly
d. The digital branches of the ulnar nerve originates from the deep branch of the ulnar nerve
b. The digital branches of the median nerve supply the lateral 3.5 digits anteriorly and their tips posteriorly
