quiz

Question 1

the nervous system is composed

Answer 1

neural tissue. Including neurons and neuroglial cells, blood vessels
and connective tissue.

Question 2

what are two systems that the nervous system are divided into

Answer 2

central and peripheral

Question 3

what do sensory functions do

Answer 3

employ receptors that detect internal and external changes in the body

Question 4

what do motor function do

Answer 4

use effectors that respond when they are stimulated by motor impulses

a. Motor portion of the PNS involved in voluntary activities is the somatic NS
b. Motor portion of the PNS involved in involuntary activities is the autonomic NS

Question 5

what does a neuron include

Answer 5

cell body, body processes, and the organelles usually found in cells

Question 6

what do dendrites and the cell body provide

Answer 6

Dendrites and the cell body provide receptors sites.

Question 7

describe a neuron

Answer 7

a single axon from the cell body & maybe enclosed in a myelin sheath & a neurolemma.

Question 8

what matter do nueron contain

Answer 8

white and gray matter

Question 9

what do white matter contain

Answer 9

myelinated axons

Question 10

what do gray matter contain

Answer 10

unmyelinated structures and cell bodies, dendrites

Question 11

Schwann Cells

Answer 11

• produce myelin found on
peripheral myelinated neurons
• speed neurotransmission

Question 12

Satellite Cells

Answer 12

• support clusters of neuron cell bodies (ganglia)

Question 13

Astrocytes

Answer 13

• CNS
• scar tissue
• mop up excess 
ions, etc
• induce synapse 
formation
• connect neurons to 
blood vessels

Question 14

Oligodendrocytes

Answer 14

• CNS

* myelinating cell

Question 15

Microglia

Answer 15

• CNS

* phagocytic cell

Question 16

Ependymal

Answer 16

• CNS
• ciliated
• help flow of CSF
• line ventricles of brain (BBB)

Question 17

what does integrative function do

Answer 17

bring sensory information together and result in decisions that are acted upon by
means of motor functions.

Question 18

Dendrites

Answer 18

process that conducts impulses towards the cell body

Question 19

Neuron

Answer 19

nerve cell

Question 20

axon

Answer 20

conducts impulses away from the cell body

Question 21

cell body

Answer 21

Largest part of a typical neuron; contains the nucleus and much of the cytoplasm

Question 22

Nodes of Ranvier

Answer 22

gaps in the fatty substances around axons

Question 23

myelin sheath

Answer 23

fatty substance that insulates axons

Question 24

Synapse

Answer 24

A junction where information is transmitted from one neuron to the next.

Question 25

a. Ions are distributed so that the inside of a cell is __________________ and the outside is __________

Answer 25

negative and postive

Question 26

b. At resting potential there are more ________ ions inside and more________ ions outside.

Answer 26

sodium and potassium

Question 27

c. This distribution is maintained by the _______________ pump.

Answer 27

na/k