spinal cord pt 2

Question 1

What are dermatomes?

Answer 1

Use specific parts of skin to know damage of nerve

Question 2

What is nerve plexus?

Answer 2

Network of interweaving anterior rami of spinal nerve

Question 3

What does individual rami branch?

Answer 3

If one goes bad the others can help

Question 4

What is intercostal nerves?

Answer 4

Between ribs and anterior rami T1-T12

Question 4

What is cervical plexus?

Answer 4

Anterior rami of C1-C4 and branches innervate.

Question 5

What is brachial plexus?

Answer 5

Anterior rami C5-T1 and network of fibers

Question 6

What is the brachial plexus composed of?

Answer 6

Anterior rami, trunks, division, cords

Question 7

What are the 5 major terminal branches?

Answer 7

Axillary nerve, median nerve, musculocutaneous nerve, radial nerve, ulnar nerve

Question 8

What is axillary nerve?

Answer 8

To deltoid; sensory input from armpit

Question 9

What is median nerve?

Answer 9

Most anterior forearm muscles; sensory input from palmar side and dorsal tips of most fingers

Question 10

What is musculocutaneous nerve?

Answer 10

To anterior arm muscles; sensory input from lateral forearm

Question 11

What is radial nerve?

Answer 11

Sensory input to posterior arm muscles and posterior forearm muscles

Question 12

What is ulnar nerve?

Answer 12

To anterior forearm muscles, hand muscles; sensory input from palmar and dorsal aspect of two medial fingers

Question 13

What is lumbar plexus?

Answer 13

From anterior rami of L1-L4

Question 14

Femoral nerve

Answer 14

Sensation; sensory input anterior and medial thigh

Question 15

What sacral plexus?

Answer 15

Anterior rami of L4-S4

Question 16

What is sciatic nerve?

Answer 16

Largest and longest nerve in body

Question 17

What is tibial nerve?

Answer 17

Receives sensory signals from skin on sole of foot

Question 18

What is common fibular nerve?

Answer 18

Splits into deep fibular nerve and superficial fibular nerve