Nervous System 2

Question 1

The autonomic system deals with the

Answer 1

‘visceral’ portion of the body [=internal organs].

Question 2

The somatic system deals with

Answer 2

body movement [and special senses in some organizational schemes].

Question 3

Neuroglial cells are specialized cells which

Answer 3

support and protect neurons, with some assisting in functioning.

Question 4

A motor neuron

Answer 4

relays information away from the CNS to muscles or glands

[AKA ‘effectors’]

Question 5

Sensory neurons have receptor regions [or are closely associated with receptor cells] that can

Answer 5

detect specific stimuli such as light energy.

Question 6

define:
stimulus
sensation

Answer 6

stimulus:
-form of energy for which we have a receptor (light)

Sensation
-how brain translates that influence (sight)

Question 7

Interneurons are located (1)  
They integrate (2)

Answer 7

1) in the brain and spinal cord.

2) incoming [sensory] information and then influence other neurons in turn.

Question 8

Synapses are (1) - either two neurons or a neuron and an effector.

Answer 8

junctions between two cells

Question 9

Gray matter consists of

Answer 9

neuron dendrites, cell bodies, and neuroglia in the CNS.

Question 10

White matter consists of

Answer 10

myelinated nerve tracts in the CNS.

Question 11

A nerve is a bundle of

Answer 11

nerve fibers [axons and dendrites] and accompanying connective tissue located in the PNS.

Question 12

What is a nerve referred to as in the CNS?

Answer 12

a tract

Question 13

A collection of neuron cell bodies in the PNS.

Answer 13

ganglion

Question 14

a bundle of nerve fibers [axons and dendrites] and accompanying connective tissue located in the PNS.

Answer 14

a nerve nerve

Question 15

A collection of neuron cell bodies in the CNS.

Answer 15

nucleus

Question 16

The nervous system is divided into

Answer 16

central nervous system [CNS] and peripheral nervous system [PNS].

Question 17

The CNS includes

Answer 17

the brain and spinal cord, which contains nuclei and tracts.

Question 18

The PNS consists of

Answer 18

nerves and ganglia.

Question 19

A nerve body consists of

Answer 19

dendrites, a cell body, and an axon.

Question 20

This contains the nucleus, Nissl bodies, neurofibrils and other organelles.

Answer 20

The cell body

Question 21

Dendrites receive

Answer 21

stimuli, and the axon conducts nerve impulses away from the cell body.

Question 22

a chemical transmission goes across what to go to a dendrite

Answer 22

synapse

Question 23

the action potential moves to and through what?

Answer 23

axon

Question 24

Where does the action potential start?

Answer 24

Axon Hillock

Question 25

Where is the axon terminal?

Answer 25

Where the axon meets a dendrite of another neuron

Question 26

Structural and functional cell of the nervous system (sometimes called a nerve cell)

Answer 26

Neuron

Question 27

Nucleus and surrounding cytoplasm of a neuron (excluding its dendrites and axons)

Answer 27

Cell Body

Question 28

Microtubules that form the cytoskeleton

Answer 28

Neurotubules

Question 29

Intermediate filaments that aggregate to form bundles called neurofibrils

Answer 29

Neurofilaments

Question 30

Aggregates of neurofilaments that extend as a complex network into dendrites and axons, their tonsil strength provides support for these processes

Answer 30

Neurofibrils

Question 31

Neuron processes that conduct information to the cell body (input)

Answer 31

Dendrites

Question 32

Neuron process that conducts nerve impulses away from the cell body (output)

Answer 32

Axon

Question 33

Triangular region connecting axon to cell body

Answer 33

Axon Hillock

Question 34

Side branches of an axon

Answer 34

Axon Collaterals

Question 35

Fine terminal branches of an axon or axon collateral

Answer 35

Telodendria

Question 36

Nerve is an axon in what?

Answer 36

PNS

Question 37

Tract is an axon in what?

Answer 37

CNS

Question 38

Ganglion is cell body in what?

Answer 38

PNS

Question 39

Nucleus is cell body in what?

Answer 39

CNS

Question 40

A sensory (afferent) neuron is (1)? and conducts impulses from (2)?

Answer 40

1) unipolar | 2) the sensory receptors into the CNS

Question 41

A motor (efferent) neuron is (1)? and conducts impulses from (2)?

Answer 41

1) multipolar | 2) the CNS to effector organs

Question 42

Interneurons are located entirely within the ?

Answer 42

CNS

Question 43

The axon is insulated by ?

Answer 43

myelin sheath

Question 44

What surrounds the axon and myelin sheath?

Answer 44

Endoneurium

Question 45

What is a bundle of nerve fibers?

Answer 45

Fascicle

Question 46

What surrounds the fascicle?

Answer 46

Perineurium

Question 47

What surrounds multiple fascicles?

Answer 47

Epineurium