Chapter 7 The Nervous System

Question 0

What are the 6 types of neuroglial cells?

Answer 0

1. Astrocytes
2. Microglia
3. Ependymal cells
4. Oligodendrocytes
5. Schwann cells
6. Satellite cells

Question 1

What are the two cell types of the nervous system?

Answer 1

1. Supporting cells (neuroglia)

2. Neurons

Question 2

What are the 4 glial cells found in the CNS?

Answer 2

1. Astrocytes
2. Microglia
3. Ependymal cells
4. Oligodendrocytes

Question 3

What are the 2 glial cells found in the PNS?

Answer 3

1. Schwann cells

2. Satellite cells

Question 4

What 2 glial cells produce the myelin sheath?

Answer 4

1. Schwann cells

2. Oligodendrocytes

Question 5

What is the basic function of the neuron?

Answer 5

To transmit messages through out the body

Question 6

What is a nuclei ?

Answer 6

Cell bodies found in clusters in the CNS

Question 7

What are ganglion?

Answer 7

A group of nerve cell bodies found in the PNS

Many- “ganglia”

Question 8

What is gray matter?

Answer 8

Unmyelinated fibers and cell bodies in the CNS

Question 9

What is white matter?

Answer 9

Sense collections of myelinated fibers in PNS

Question 10

What do the afferent (sensory) neurons do?

Answer 10

They carry impulses from sensory receptors to the CNS

Question 11

What do efferent (motor) neurons do?

Answer 11

They carry impulses from the CNS to the effectors

Question 12

What do they inter (association) neurons do?

Answer 12

They connect motor and sensory neurons at the CNS

Question 13

Reflexes are….

Answer 13

Rapid
Predictable
Involuntary responses

Question 14

Somatic “body” reflexes do what?

Answer 14

Stimulate skeletal (voluntary) muscles

Question 15

Autonomic reflexes do what?

Answer 15

Regulate activity of smooth muscles, heart, and glands

Involuntary

Question 16

What are the 5 basic components of the reflex arc?

Answer 16

1. Sensory receptor (SR)
2. Sensory neuron (SN)
3. Integration center (IC)
4. Motor neuron (MN)
5. Effector organ (EO)