Review Chapter 9

Question 1

Axon

Answer 1

The part of a neuron that conducts impulses away from it’s cell body.

Question 2

Cell body

Answer 2

The portion of a neuron containing the nucleus.

Question 3

Dendrite

Answer 3

Highly branched input part of a neuron

Question 4

Efferent

Answer 4

Another name for a motor neuron

Question 5

Ganglion

Answer 5

Groups of cell bodies outside the CNS

Question 6

Gray Matter

Answer 6

Unmyelinated axons of neurons, cell bodies and dendrites

Question 7

Interneuron

Answer 7

Short neurons (active in Integration)

Question 8

Motor neuron

Answer 8

Neuron that conveys information from the CNS to an effector

Question 9

Myelin

Answer 9

The insulating material of peripheral neuron fibers

Question 10

Nerve

Answer 10

A bundle of myelinated fibers outside of the CNS

Question 11

Nervous System Functions

Answer 11

Sensation, Integration, and Motor function

Question 12

Neuroglia

Answer 12

Provide support and protection for the nervous system, bind nervous tissue to blood vessels, form myelin, and serve phagocytic functions. They are small and abundant. Can form brain tumors known as gliomas.

Question 13

Neurolemma

Answer 13

Surrounds the sheath; only found in the axons of the PNS (produces Myelin)

Question 14

Neuron

Answer 14

Nerve cell- carries impulses

Question 15

Node of Ranvier

Answer 15

Unmyelinated gap in the myelin sheath

Question 16

Parasympathetic division

Answer 16

Supports “rest and digest”

Question 17

Sensory neuron

Answer 17

Neuron that conveys information from a receptor to the CNS

Question 18

Sympathetic division

Answer 18

Branch of the nervous system described as

“Fight or flight”

Question 19

Synaptic end bulb

Answer 19

Rounded structure at the distal end of an axon terminal

Question 20

Tract

Answer 20

Bundle of many axons in the CNS

Question 21

White matter

Answer 21

Myelinated axons of neurons, located in the outside part of the spinal cord and the inside part of the brain.

Question 22

Afferent

Answer 22

(Sensory) Neuron that conveys information from a receptor to the CNS