8.4 Cells of the Nervous System

Question 1

Also called as Nerve Cells

Answer 1

Neurons

Question 2

Cell Body, Dendrites, Axon

Answer 2

Anatomy of Neuron

Question 3

It is the central body of a Neuron that has 1 nucleus

Answer 3

Cell body

Question 4

A high branching cytoplasmic extensions; extension of a cell body that connects their bases to neuron cell body

Answer 4

Dendrite

Question 5

Function of Dendrite

Answer 5

Receive information

Question 6

A long single process extending from neuron cell body

Answer 6

Axon

Question 7

Axon Hillock

Answer 7

It is where axon leaves neuron cell body

Question 8

Pathway of actions potential of axons of sensory neurons

Answer 8

towards CNS

Question 9

Pathway of actions potential of axons of motor neurons

Answer 9

away from the CNS

Question 10

This highly specialized material surrounds insulating layer cellsof an axon

Answer 10

Myelin Sheath

Question 11

Contains only many dendrite and a single axon. What cell type this is?

Answer 11

Multipolar Neuron

Question 12

Structure of Bipolar Neuron

Answer 12

One dendrite and one axon

Question 13

This cell type of a neuron extends to Periphery and CNS;

Answer 13

Pseudo-Unipolar Neuron

Question 14

These are called supportive cells of the CNS and PNS that does not contain action potentials

Answer 14

Glial Cells

Question 15

Function of Glial Cells

Answer 15

Enhances neuron function and maintains normal condition within nervous tissue

Question 16

It is also called as Neuroglia Cells

Answer 16

Glial Cells

Question 17

Four types of Glial Cells in the CNS division

Answer 17

Astrocytes, Ependymal Cells, Microglia, Oligodendrocytes

Question 18

Schwann Cells and Satellite Cells is part of what neuroglia division

Answer 18

Peripheral Nervous System

Question 19

This type of neuroglia plays participates in forming the blood-brain barrier

Answer 19

Astrocytes

Question 20

This barrier by the astrocyte allows only small substances to pass through; shows permeability

Answer 20

blood-brain barrier

Question 21

A fluid-filled cavities that produces cerebrospinal fluid that acts as a cushion support

Answer 21

Ependymal

Question 22

Microglia

Answer 22

Acts an an immune cell; removes bacteria and debris in the brain

Question 23

Provides myelin sheath - a insulating material surrounding the axon in CNS

Answer 23

Oligodendrocytes

Question 24

Provides myelin sheath - a insulating material surrounding the axon in PNS

Answer 24

Schwann Cells

Question 25

These type of cell provides support and protection from heavy metal poisons and provide nutrition to neurons

Answer 25

Satellite Cells

Question 26

Axons with myelin sheaths are called? This also speed up action potential

Answer 26

Myelinated Axons

Question 27

This inhibits ion movement across cell membrane

Answer 27

Myelin Sheath

Question 28

What is a Node of Ranvier

Answer 28

Gap in myelin sheath

Question 29

An autoimmune disease of myelin sheath that causes loss of muscle; paralyzed and communication problem

Answer 29

Multiple Sclerosis

Question 30

Gray Matter consist of ___ in CNS

Answer 30

Groups of neuron cell bodies and dendrites

Question 31

Cortex

Answer 31

Gray matter that is located on the surface of the brain

Question 32

Nuclei

Answer 32

Cluster of gray matter located deeper within the brain

Question 33

Ganglion (also known as swelling)

Answer 33

Gray matter that consist neuron and cell body in PNS

Question 34

Consists of bundle of parallel axons with their myelin sheaths

Answer 34

White Matter

Question 35

This propagate action potential from one place to another in the CNS

Answer 35

Nerve Tracts (also called as Conduction Pathways)

Question 36

Nerves that associate connective tissue in the PNS

Answer 36

White Matter in PNS