Chapter 3 pt. 1

Question 1

What is the difference neurons and glia?

Answer 1

Neurons, receive and transmit information to other cells.
Glia, support cell (structurally and functionally!)
Waste management
Provide insulation (i.e., myelin sheath)
10 times more numerous than neurons but 1/10 the size

Question 2

Glia is 10 times more numerous than ________ but 1/10 the size

Answer 2

neurons

Question 3

______ is 10 times more numerous than neurons but 1/10 the size

Answer 3

Gila

Question 4

What are the functions of the Glia?

Answer 4

• Support cell (structurally and functionally!)
• Waste management
• Provide insulation (i.e., myelin sheath)
• 10 times more numerous than neurons but 1/10 the size

Question 5

What is the goal of the nervous system?

Answer 5

send and receive information

Question 6

The nervous system is generally composed of what two primary kinds of cells?

Answer 6

1. Neurons

2. Glia

Question 7

Neuron structure: Cell body (orsoma) contains the ________ and other structures found in most cells.

Answer 7

nucleus

Question 8

Neuron structure: ____ ______ (orsoma) contains the nucleus and other structures found in most cells.

Answer 8

cell body

Question 9

Neuron structure: Cell body (________) contains the nucleus and other structures found in most cells.

Answer 9

orsoma

Question 10

Neuron structure: ___________ receives information (i.e., charged ions) and sends to cell body.

Answer 10

dendrites

Question 11

Neuron structure: Dendrites receives __________ (i.e., charged ions) and sends to cell body.

Answer 11

information

Question 12

Neuron structure: Dendrites receives information (i.e., charged ions) and sends to ____ ______.

Answer 12

cell body

Question 13

Neuron structure: Dendrites receives information (i.e., ________ ____) and sends to cell body.

Answer 13

charged ions

Question 14

Neuron structure: When it comes to dendrites the greater the ________ _____, the more info it take sin.

Answer 14

surface area

Question 15

Neuron structure: When it comes to dendrites the greater the surface area, the more _____ it take sin.

Answer 15

info

Question 16

Neuron structure: thin fiber of constant diameter, in most cases longer than the dendrites.

Answer 16

Axon

Question 17

Neuron structure: What are the functions of the Axon?

Answer 17

sends information from cell body to the pre-synaptic terminals to communicate with other neurons, glands, or muscles.

Question 18

Neuron structure: Axons are in most cases longer than the __________

Answer 18

dendrites

Question 19

Neuron structure: _______ are in most cases longer than the dendrites

Answer 19

Axons

Question 20

Neuron structure: An axon sends information from ___ _____ to the pre-synaptic terminals to communicate with other neurons, glands, or muscles.

Answer 20

cell body

Question 21

Neuron structure: An axon sends information from cell body to the ____-________ terminals to communicate with other neurons, glands, or muscles.

Answer 21

pre-synaptic

Question 22

Neuron structure: An axon sends information from cell body to the pre-synaptic terminals to _____________ with other neurons, glands, or muscles.

Answer 22

communicate

Question 23

Neuron structure: An axon sends information from cell body to the pre-synaptic terminals to communicate with other ________, ______, or ________.

Answer 23

neurons
glands
muscles

Question 24

Neuron structure: A neuron can have many _________ but only one ______.

Answer 24

dendrites

axon

Question 25

True or False: | Neuron structure: There CAN be many branches off of the axon.

Answer 25

True

Question 26

Neuron structure: There CAN be many _________ off of the axon.

Answer 26

branches

Question 27

Neuron structure: What is the difference between the presynaptic terminal and the postsynaptic terminal?

Answer 27

The presynaptic terminal is the end point of the axon that releases neuro-chemicals (i.e., neurotransmitter). The postsynaptic terminal is the the dendrite on the receiving cell, contains receptor sites that neurotransmitter can bind to..

Question 28

Neuron structure: insulating material covering axons in many neurons; speeds up communication along the axon.

Answer 28

Myelin sheath

Question 29

The myelin sheath covers what section of a neuron?

Answer 29

it covers the axon

Question 30

Is a myelin sheath a good thing or a bad thing? Why?

Answer 30

It is good, because it speeds up communication along the axon

Question 31

What is a synaptic cleft?

Answer 31

the gap between Neurons

Question 32

neurotransmitters travel through the ________ _______

Answer 32

synaptic cleft

Question 33

little sacs filled with neurotransmitters

Answer 33

vesicles