Neurophysiology

Question 1

define root

Answer 1

where nerves enter (dorsal; sensory) or exit (ventral; motor) spinal cord usually via unipolar neurons

Question 2

define ramus

Answer 2

branches of spinal cord off of root. dorsal branch usually innervates back while ventral innervates rest of body, with ventral nerves from thoracic nerves innervating mostly intercostal nerves and others innervating rest of body)

Question 3

define plexus

Answer 3

bundle of intersecting nerves, includes cervical, brachial, lumbar, and sacral

Question 4

factors affecting resting membrane potential

Answer 4

.

Question 5

equation nerve conduction velocity

Answer 5

.

Question 6

effect of myelination on nerve conduction velocity

Answer 6

higher

Question 7

effect of increased axon diameter on nerve conduction velocity

Answer 7

higher

Question 8

6 principles of chemical neurotransmission

Answer 8

.

Question 9

cholinergic transmission

Answer 9

.

Question 10

adrenergic transmission

Answer 10

.

Question 11

categories of cholinesterase inhibitors

Answer 11

.

Question 12

dorsal root contains ____ (motor/sensory) fibers while ventral root is _____

Answer 12

dorsal = sensory
ventral = motor (VROOM VROOM)