Chapter 7 Part 1 (Nervous System)

Question 1

The CNS consists of?

Answer 1

Brain and Spinal cord

Question 2

What is the peripheral nervous system (PNS)

Answer 2

System of nerves that connects the outlying parts of the body with the CNS

Question 3

What is the general function if the CNS?

Answer 3

Transmit signals between the rest of the body

Question 4

What are the two classifications of the PNS?

Answer 4

1. Afferent (sensory)
2. Efferent (motor branches)

Question 5

What is the sensory divisions function of the PNS?

Answer 5

Send sensory input to the CNS from sensory receptors around the body

Question 6

What is the motor divisions function of the PNS?

Answer 6

Send motor signals from the CNS to muscles or glands

Question 7

What is a neuroglia (glial cell)?

Answer 7

A nonneural tissue of the CNS that performs supportive and other function

Question 8

What are the functions if neuroglia?

Answer 8

Support, insulate and protect neurons

Question 9

What is an astrocyte shape and function?

Answer 9

1. Star shaped
2. Form a barrier between capillaries and neurons

Question 10

What is an microglia shape and function?

Answer 10

1. Spider shaped
2. Monitor health of nearby neurons and dispose of debris and bacteria

Question 11

What is an ependymal shape and function?

Answer 11

1. Cubes
2. Circulate cerebrospinal fluid

Question 12

What is an oligodrocytes function?

Answer 12

Produce fatty insulating coverings (myelin sheaths)

Question 13

What is a neurons function?

Answer 13

Transmit messages throughout the body

Question 14

What is a nerve pulse?

Answer 14

A self-propagating wave of depolarization (action potential)

Question 15

What is a reflex arc?

Answer 15

Neural pathway for reflexes

Question 16

List the events that lead to a nerve impulse

Answer 16

1. resting membrane is polarized
2. Stimulus initiates local depolarization
3. Depolarization and generation of an action potential
4. Propagation of the action potential
5. Repolarization
6. Initial ionic conditions a restored

Question 17

What are the four major regions of the cerebral hemispheres?

Answer 17

1. Frontal
2. Parietal
3. Temporal
4. Occipital

Question 18

The cerebral cortex is split into two ____.

Answer 18

Hemispheres

Question 19

The right cerebral cortex hemisphere controls the ___ side of the body.

Answer 19

The left side of the body

Question 20

The left cerebral cortex hemisphere controls the ___ side of the body.

Answer 20

The right side of the body

Question 21

What is the frontal lobes functions?

Answer 21

1. Voluntary movement
2. Expressive language
3. Higher level executive functions

Question 22

What is the parietal lobe function?

Answer 22

Process somatosensory information

Question 23

What is the temporal lobe function

Answer 23

Process auditory information

Question 24

What is the occipital lobe function?

Answer 24

Process visual perception

Question 25

What is the diencephalon function?

Answer 25

Primary relay and processing center for sensory information and autonomic control

Question 26

What is the function of the brain stem?

Answer 26

regulate most of the body automatic functions that are essential for life