Quiz 2

Question 1

How many pairs of cranial and spinal nerves?

Answer 1

12 cranial

31 spinal

Question 2

Where are cell bodies of the peripheral nervous system located?

Answer 2

in the ganglia

Question 3

How many sets of neurons does the ANS have in a series?

Answer 3

2 sets

Question 4

CNS consists of the

Answer 4

brain

Question 5

ANS divisions

Answer 5

Sympathetic and Parasympathetic

Question 6

Sympathetic division

Answer 6

most active during physical activity

Question 7

Parasympathetic division

Answer 7

regulates resting functions- digestion and emptying bladder

Question 8

PNS consists of

Answer 8

• spinal nerves

- sensory and motor divisions

Question 9

Where does protein synthesis in neurons occur?

Answer 9

Cell bodies or soma

Question 10

Dendrites

Answer 10

are the input part of neuron

Question 11

Axons contain

Answer 11

the trigger zone

Question 12

A neuron that carries action potentials from one neuron to another is called?

Answer 12

interneuron

Question 13

A neuron that conducts pain sensations to the central nervous system would be classified as a

Answer 13

sensory or afferent neuron

Question 14

Neurons that have a single axon and a single dendrite are

Answer 14

bipolar

Question 15

Neurons in the skin that are responsible for detecting pain are

Answer 15

pseudo-unipolar

Question 16

The blood-brain barrier

Answer 16

protects neurons from toxic substances in the blood

Question 17

Microglia

Answer 17

are phagocytic cells in the CNS

Question 18

Gaps or interruptions in the myelin sheath are called

Answer 18

nodes of Ranvier

Question 19

Action potentials are conducted rapidly when transmission is

Answer 19

from node to node on a myelinated axon

Question 20

White matter is composed of

Answer 20

bundles of myelinated axons

Question 21

Gray matter on the surface of the brain is/are called

Answer 21

the cortex

Question 22

Clusters of gray matter deep within the brain are called

Answer 22

nuclei

Question 23

If there is an increase in membrane permeability to potassium the cell will

Answer 23

hyperpolarize

Question 24

A change in resting membrane potential confined to a small area is called a

Answer 24

local potential

Question 25

Depolarization of the nerve cell membrane occurs when there is a rapid influx of

Answer 25

Sodium ions

Question 26

During the absolute refractory period, the cell

Answer 26

in insensitive to further stimulation