A&P Chapter 9 Test

Question 1

Multipolar Neurons

Answer 1

Mostly found in the brain and spinal cord. One process is an axon, rest are dendrites.

Question 2

Bipolar Neurons

Answer 2

There are two processes arising in opposite directions from the cell body. One axon, one dendrite, found in eyes, nose, and ears.

Question 3

Unipolar Neurons

Answer 3

A single process (axon) extending from cell body.

Question 4

General functions of the nervous system

Answer 4

Receive sensory information from the body, processing that information, and initiating a response.

Question 5

Types of neuoglia

Answer 5

Central Nervous System:
Microglial cells, Oligodendrocytes, Astrocytes, Ependymal
Peripheral Nervous System:
Schwann cells, Satellite cells

Question 6

Microglial cells

Answer 6

Phagocytized bacterial cells and cellular debris that regulates brain development

Question 7

Oligodendrocytes

Answer 7

Produce insulating layers of myelin and increase the speed of production of neurons in the brain and spinal cord.

Question 8

Astrocytes

Answer 8

Between neurons and blood vessels that provide structural support, form scar tissue, and help regulate concentration of nutrients in the tissue

Question 9

Ependymal

Answer 9

Form membranes that cover specialized brain parts

Question 10

Schwann cells

Answer 10

Form the myelin sheath around the axons

Question 11

Satellite cells

Answer 11

Provide a protective coat around cell bodies.

Question 12

Automatic nervous sytem

Answer 12

The unconsciously or involuntary. Motor function.

Question 13

Somatic nervous system

Answer 13

Consciously controlled. Motor function.

Question 14

Neurilemma

Answer 14

Only found in the PNS. They are involved in the regeneration of the axons when peripheral nerves are damaged. CNS doesn’t have neurilemma, so they don’t regenerate.

Question 15

Three meninges of the brain

Answer 15

Dura mater (thick outer layer), Arachnoid mater (thin, middle layer), Pia Mater (thin inner layer).

Question 16

Sensory neurons

Answer 16

Neurons for sensory information, conduct impulses to the brain/spinal cord

Question 17

Mixed (inter) neurons

Answer 17

Neurons only associated with the brain/spinal cord (sensory and motor)

Question 18

Motor neurons

Answer 18

Neurons associated with muscular function (muscle and glands)

Question 19

Cerebrum

Answer 19

Initiates and coordinates movement and regulates temperature (speech, judgement, thinking, emotion, and thinking).

Question 20

Diencephalon (middle)

Answer 20

Coordinates endocrine system, regulates circadian rhythms and relay motor/sensory signals.

Question 21

Brainstem

Answer 21

Controls breathing, heart rate, and senses.

Question 22

Cerebellum (athlete)

Answer 22

Controls balance and complex motor functions

Question 23

Components of a neuron

Answer 23

Axon, Dendrite, Cell body

Question 24

Axon

Answer 24

Conducts impulses away from the cell body of the neuron.

Question 25

Dendrite

Answer 25

Conduct impulses to the cell bodies of the neuron

Question 26

Cell Bodies

Answer 26

Contains the normal parts of the eukaryotic cell

Question 27

Central nervous system (CNS)

Answer 27

Only concerned over the brain and psinal cord

Question 28

Peripheral nervous system (PNS)

Answer 28

Includes all the nerves that branch out from the CNS to the rest of the body.

Question 29

Ascending tracts

Answer 29

Sensory information that is being carried to the brain

Question 30

Descending tracts

Answer 30

Motor impulses being carried from the brain to muscles and glands