2.4 Spinal Nerves Part 2

Question 1

What is the general pathway of information to and from the spinal cord?

Answer 1

sensory receptor - sensory spinal nerve - dorsal root - spinal cord - brain - spinal cord - ventral root - motor spinal nerve - effector

Question 2

What is a dermatome?

Answer 2

region of skin that carries sensory information through a specific pair of spinal nerves to the spinal cord and up to the brain

Question 3

What is the cervical plexus?

Answer 3

combination of the ventral rami of spinal nerves C1-C5

Question 4

What is the most important nerve of the cervical plexus?

Answer 4

phrenic nerve

Question 5

What would severing the phrenic nerve cause?

Answer 5

Paralysis of the diaphragm

Question 6

What does irritation of the phrenic nerve cause?

Answer 6

Hiccups

Question 7

What does paralysis mean?

Answer 7

Motor loss of function

Question 8

What would be needed if the diaphragm is paralyzed?

Answer 8

Ventilator

Question 9

What is a ventilator?

Answer 9

Mechanical respirator

Question 10

What does the phrenic nerve arise from?

Answer 10

Ventral rami of C3-C5