Review Chapter 9 Flashcards Preview

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Flashcards in Review Chapter 9 Deck (22):
1

Axon

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

2

Cell body

The portion of a neuron containing the nucleus.

3

Dendrite

Highly branched input part of a neuron

4

Efferent

Another name for a motor neuron

5

Ganglion

Groups of cell bodies outside the CNS

6

Gray Matter

Unmyelinated axons of neurons, cell bodies and dendrites

7

Interneuron

Short neurons (active in Integration)

8

Motor neuron

Neuron that conveys information from the CNS to an effector

9

Myelin

The insulating material of peripheral neuron fibers

10

Nerve

A bundle of myelinated fibers outside of the CNS

11

Nervous System Functions

Sensation, Integration, and Motor function

12

Neuroglia

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.

13

Neurolemma

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

14

Neuron

Nerve cell- carries impulses

15

Node of Ranvier

Unmyelinated gap in the myelin sheath

16

Parasympathetic division

Supports "rest and digest"

17

Sensory neuron

Neuron that conveys information from a receptor to the CNS

18

Sympathetic division

Branch of the nervous system described as
"Fight or flight"

19

Synaptic end bulb

Rounded structure at the distal end of an axon terminal

20

Tract

Bundle of many axons in the CNS

21

White matter

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

22

Afferent

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