Nervous System Questions

Question 1

What are the three nerve types involved in a reflex arc?

Answer 1

Sensory neuron, interneuron, motor neuron

Question 2

What is meant by an automatic reaction?

Answer 2

Involuntary reaction

Question 3

A motor nerve is between…

Answer 3

The PNS + CNS

Question 4

Where does the motor nerve begin?

Answer 4

Begins in the gray matter

Question 5

What nerve ends in gray matter

Answer 5

Sensory nerve

Question 6

What is an association nerve?

Answer 6

A nerve that ends and begins in gray matter

Question 7

What is the primary function of the myelin sheath?

Answer 7

It increases the speed at which nerve impulses are transmitted. It hops from nodes to nodes

Question 8

What is a receptor?

Answer 8

It’s detects the stimulus…

Eg. Recognizes pain

Question 9

What is the neurilemma?

Answer 9

Forms outermost layer of nerve fiber in the peripheral nervous system.

Question 10

What is the purpose of meninges?

Answer 10

It protects the CNS.

Question 11

What is a ganglion?

Answer 11

– Located outside of CNS
– Can be used to identify sensory neuron
– Cluster of cell bodies (PNS)
– Measures threshold

Question 12

Name for regions of the spinal column; [from top to bottom]

Answer 12

A. Cervical
B. Thoracic
C. Lumbar
D. Sacral

Question 13

The fight or flight hormone is…

Answer 13

Adrenaline

Question 14

Adrenaline functions and what nervous system?

Answer 14

The peripheral nervous system [Motor]

Question 15

Which nervous system controls voluntary responses?

Answer 15

Somatic nervous system

Question 16

Which nervous system controls involuntary responses?

Answer 16

Autonomic nervous system

Question 17

What is the function of the normalization of the nervous system?

Answer 17

ACh [Acetylcoline]

Question 18

All or none response

Answer 18

– Below threshold; none; neuron rests

– Or above threshold; all; neuron fires

Question 19

Diffusion

Answer 19

Move from high concentration to low concentration

Question 20

Sensory reception pathway through the brain…

Answer 20

Stimulus… Sensory receptor… Sensory neuron… Interneuron… Cerebrum… Thalamus

Question 21

Explain the importance of the hypothalamus…

Answer 21

Is the Center for homeostatic regulation for the ANS.

Question 22

Why is the cerebrum convoluted?

Answer 22

To increase surface area [increase surface area equals increased nerve cells which increase learning capacity]

Question 23

What is the difference between gray matter and white matter in the brain?

Answer 23

Grey: dark area (H) interpretation area
White: myelinated nerve fibres, transmits info

Question 24

Find motor movement is controlled by which part of the brain?

Answer 24

Cerebellum

Question 25

Which of the following neurotransmitters is only known to inhibit the central nervous system?

Answer 25

Serotonin

Question 26

Autonomic nervous system is coordinated by the...

Answer 26

Medulla oblongata

Question 27

Dilation of the pupil is involved with what nervous system?

Answer 27

Sympathetic nervous system

Question 28

The membrane separating the middle and inner ear is called the

Answer 28

Oval window

Question 29

What membrane relieves pressure from vibration set up in the cochlea by the oval window?

Answer 29

The round window

Question 30

Movement emotions are detected by the

Answer 30

Semicircular Canal

Question 31

The main function of the Eustachian tube is to..

Answer 31

Maintain equal air pressure on the eardrum

Question 32

The ear structure that converts the mechanical energy of sound to nerve impulses is the

Answer 32

Organ of corti

Question 33

How is the brain involved in a reflex arc?

Answer 33

It's not