Class 4 Deck 1 (review)

Question 1

What are the 2 types of neural cells in the nervous system?

Answer 1

• Neuroglia

- Neurons

Question 2

What do neuroglia cells do?

Answer 2

-Support regulate and protect neurons

Question 3

What do neurons do?

Answer 3

-Process, transfer and store information

Question 4

What are the neuroglia cells of the CNS?

Answer 4

• Asrocytes
• Oligodendrocytes
• Microglia
• Ependymal

Question 5

What are the neuroglia cells of the PNS?

Answer 5

• Schwann cells

- Satellite cells

Question 6

What do the astrocytes do?

Answer 6

• Supportive framework
• create BBB
• Regulate interstitial fluid around neurons
• Secrete chemicals for neuron formation
• Scar tissue after CNS injury

Question 7

Where are the oligodendrocytes located? What do they do?

Answer 7

• Between neuron and blood vessels

- Create mylelin sheath

Question 8

What do the microglia do?

Answer 8

-Phagocytize waste and pathogens

Question 9

What type of cell is combined with endothelial cells to form the corcoid plexus and secrete CSF?

Answer 9

-Ependymal

Question 10

What areas are lined with ependymal cells?

Answer 10

• Central spinal canal

- Ventricular cavaties

Question 11

What surrounds the axon of neurons in the PNS and makes the neurilemma and myelin sheath?

Answer 11

Schwann cells

Question 12

Neurilemma allow for potential __________ of damaged axons in the _____.

Answer 12

• Regeneration

- PNS

Question 13

Satellite cells ______ groups of cell bodies of _______ within ________ of the PNS

Answer 13

• Support
• Neurons
• Ganglia

Question 14

What is the structural unit of the nervous system? and what does it do?

Answer 14

• Neuron

- Receives and conducts stimuli

Question 15

The neuron consists of what 3 things?

Answer 15

• Cell body
• Axon (only 1)
• Dendrite

Question 16

Describe multipolar neurons?

Answer 16

• Many dendrites and one axon

- Found as Motor and interneurons

Question 17

Describe Bipolar neurons?

Answer 17

• One dendrite One Axon

- Rare (found only in eye and ear)

Question 18

Describe unipolar neurons?

Answer 18

• Dendrite (@ receptor) connect directly to spinal cord or brain.
• Sensory neurons

Question 19

Most sensory neurons are what structure?

Answer 19

-Unipolar

Question 20

Motor and Association neurons are what structure type?

Answer 20

-Multipolar

Question 21

What 3 things do Association (interneurons) do?

Answer 21

• Transmit info between neurons
• Analyze input
• Coordinate output

Question 22

What is the most common type of neuron?

Answer 22

-Association (interneuron)

Question 23

The axons of neurons are bundled together to form ______ in the PNS and ____/______ in the CNS. These are referred to as ______ matter.

Answer 23

• Nerves
• Tract/Pathways
• White (myelinated)

Question 24

cell bodies of neurons are clustered together into _______ in the PNS & ______/______ in the CNS. These are referred to as _______ matter.

Answer 24

• Ganglia
• Nuclei/Centers
• Grey (unmyelinated)

Question 25

The ______ apart the nodes of ranvier are, the ______ the impulse is transmitted.

Answer 25

• Farther

- Faster

Question 26

What makes up the “white matter”

Answer 26

-Groupings of myelinated axons

Question 27

What makes up the gray matter?

Answer 27

• Groups of neuronal cell bodies
• Dendrites
• Synapes