Structure And Functions Of Neurons

Question 1

The cells that make up the nervous system are called?

Answer 1

Neurons

Question 2

They communicate with each other using a mixture of?

Answer 2

Electrical and chemical signals

Question 3

Give the order of the structure of a neuron

Answer 3

1-dendrites
2-cel body
3-axon
4-myelin sheath
5-nodes or ranvier
6-terminal button

Question 4

Dendrites?

Answer 4

-where neurotransmitters and receptors are found
-once n and r bind new electrical impulse occur

Question 5

Cell body?

Answer 5

-includes nucleus
-which contains genetic material

Question 6

Axon?

Answer 6

-sends a nerve impulse
-trough neuron
-to transmit a message to next neuron

Question 7

Myelin sheath

Answer 7

-protect the axon
-helps speed up transmission of message

Question 8

Nodes of ranvier

Answer 8

-speeds up transmission
-jumping across gaps along axon

Question 9

Terminal button?

Answer 9

-end of neuron
-sends info through to the next neuron
-trough release of neurotransmittes

Question 10

Sensory neuron

Answer 10

LOCATION= PNS in clusters known ganglia

FUNCTION=sends info from senses towards brain -receptors found in eyes,skin

STRUCTURE= long dendrites nd short axons

Question 11

Relay neuron

Answer 11

LOCATION= brain nd cns

FUNCTION= analysing the sensation from neurons deciding how to respond

STRUCTURE= short dendrites nd short axons no mylean sheat

Question 12

Motor neuron

Answer 12

LOCATION= cell body in cns nd long axons in pns

FUNCTION= send info via long axons from brain trough effectors such as muscle or gland

STRUCTURE= short dendrites nd long axons