Unit 5 Equilibrum nervous system

Question 1

Central vs periphral Nervous system

Answer 1

Central:
-Brain + spine
-makes decisions

Peripheral:
-nerves connecting organs to brain/spine
-gathers and sends sensory info

–>
somatic
+
automatic

–>
Smypathetic
+
parasympathetic

Question 2

Types of Nerve cells
1. Glial cells:

2. Neurons:

Answer 2

1. Glial cells:nonconducting cells that ** structural support** nerve cells
2. Neurons:basic building blocks of nervous systems

Question 3

structure of a neuron

Dendrite:
cell body:
axon:
myelin sheath:
nodes of ranvier:
terminal branches:

Answer 3

Dendrite: receive impules

cell body: has nucleus

axon: carries impuls away from cell body

myelin sheath: insulates the axon

nodes of ranvier: gas of axon between myelin sheath for liquid

terminal branches: send impuls out

Question 4

What is the mylen sheath made of?

Answer 4

Schwann cells
type of glial cells

Question 5

Types of Neurons

Sensory/afferen:

Internaurons:

Motor/efferon:

Answer 5

Sensory: info –> Central nervous syetem
ganglia = cluster of sensory cells outside spine
input

Internaurons: in brain + spine
connect and relay impulses between sensory neurons and mother neurons
processing

Motor: central nervous system –> effectors (muscles, skin, etc)