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A/P: Chapter 7: Nervous System Part II

Total questions: 49

Worksheet time: 2hrs 38mins

Name
Class
Date
1.

When a nerve fiber is polarized, the concentration of

a)

sodium and potassium ions is higher on the outside of its membrane

b)

sodium and potassium ions is higher on the inside of its membrane

c)

sodium ions is higher on the inside of its membrane and potassium ions is higher on the outside of its membrane

d)

sodium ions is higher on the outside of its membrane and potassium ions is higher on the inside of its membrane

2.

The minimal stimulus needed to elicit an action potential in a neuron is called the ___ potential

a)

resting

b)

action

c)

threshold

d)

refractory

3.
At which point on the diagram does depolarisation of the axon occur? 
a)
A
b)
B
c)
C
d)
D
4.
A membrane potential becoming less negative is called
a)
hyperpolarization
b)
depolarization
c)
repolarization
d)
polarization
5.
In resting potential, neurons have more _________ on the outside of the cell membrane.
a)
K+
b)
NaCl
c)
Na+
d)
Cl-
6.

What number(s) on the graph represents the THRESHOLD level of stimulus?

a)

1 and 5

b)

2

c)

3

d)

6

7.

These respond to excessive chemical, mechanical or thermal pain; found in every tissue of the body and adapt slowly

a)

mechanoreceptor

b)

nociceptor

c)

photoreceptor

d)

thermoreceptor

8.

These are found in the retina, detects light.

a)

mechanoreceptor

b)

nociceptor

c)

photoreceptor

d)

thermoreceptor

9.

Most important and common inhibitory neurotransmitter

a)

Acetylcholine

b)

Dopamine

c)

Epinephrine

d)

Gama-Aminobutyric Acid (GABA)

10.

Neurotransmitter produced when "feeling good," causes addictions

a)

Serotonin

b)

Dopamine

c)

Epinephrine

d)

Gama-Aminobutyric Acid (GABA)

11.

Most common neurotransmitter found in both the CNS and PNS

a)

Acetylcholine

b)

Dopamine

c)

Epinephrine

d)

Gama-Aminobutyric Acid (GABA)

12.

Also known as adrenaline, causes the feeling of being “revved up” or on edge

and activates a “fight or flight” reaction in the autonomic nervous system

a)

Acetylcholine

b)

Dopamine

c)

Epinephrine

d)

Gama-Aminobutyric Acid (GABA)

13.

Neurotransmitter used for attention and other complex cognitive functions (drives), such as sleep (dreaming), eating, mood, pain regulation

a)

Serotonin

b)

Dopamine

c)

Epinephrine

d)

Gama-Aminobutyric Acid (GABA)

14.

Releases neurotransmitters

a)

axon terminal

b)

myelin sheath

c)

neurolemma

d)

neuron cell body

e)

Nissl bodies

15.

Clustered ribosomes and rough ER

a)

axon terminal

b)

myelin sheath

c)

neurolemma

d)

neuron cell body

e)

Nissl bodies

16.

Increases the speed of impulse transmission

a)

axon terminal

b)

myelin sheath

c)

neurolemma

d)

neuron cell body

e)

Nissl bodies

17.
The central nervous system is comprised of all the neurons in the brain and the ____.
a)
Spinal Cord
b)
Cerebellum
c)
Medulla
d)
Pons
18.
The gap that a message has to cross to get from one neuron to the other is called the _____
a)
synapse
b)
dendrite
c)
axon
d)
nucleus 
19.
What does the autonomic nervous system control?
a)
Voluntary movement
b)
Cardiac muscles only
c)
Involuntary responses
d)
The spinal cord
20.
The myelin sheath
a)
makes the signal travel faster
b)
protects the neuron
c)
carries the signal away from the cell body
d)
carries the signal to the cell body
21.

The cytoplasmic extensions that provide the main receptive surface for neurons are called...

a)
axon
b)

dendrites

c)
cell body
d)
axon terminal
22.
Which part of the neuron is a long fiber that send information to other cells?
a)
dendrite
b)
terminal
c)
cell body
d)
axon
23.
The part of the neuron that receives signals is the:
a)
Axon
b)
Dendrite
c)
Axon Terminal
d)
Cell Body
24.
The part of the neuron that transmits signals to muscles is the:
a)
Axon
b)
Dendrite
c)
Axon Terminal
d)
Cell Body
25.
Heartbeat would be accomplished by which branch of the nervous system?
a)
Sensory
b)
Autonomic
c)
Motor
d)
Pineal
26.
This nervous system branch causes increases in heart rate and breathing.
a)
Sympathetic
b)
Parasympathetic
c)
Motor
d)
Sensory
27.
Two major branches of the nervous system
a)
central and peripheral
b)
peripheral and motor
c)
motor and sensory
d)
central and motor
28.
B
a)
Dendrite
b)
Axon
c)
Axon Terminal
d)
Cell Body
29.

E

a)

Synapse

b)

Cell Body (Soma)

c)

Axon

d)

Dendrite

30.
A
a)
Dendrite
b)
Axon
c)
Axon Terminal
d)
Cell Body
31.
a)

Nucleus

b)

Cell Body

c)

Axon

d)

Node of Ranvier

32.

Neurons that carry information from the sensory receptors to the CNS:

a)

Sensory, afferent

b)

Sensory, efferent

c)

Moror, afferent

d)

Motor, efferent

33.

Type of neuron that perceive information about your environment.

a)

Motor Neuron

b)

Interneuron

c)

Sensory Neuron

34.

Type of neuron located only in the brain and spinal cord that pass impulses from one neuron to another.

a)

Motor Neuron

b)

Interneuron

c)

Sensory Neuron

35.
The nervous system_________
a)
receives information about what is going on in your body as well as what is going on around you. 
b)
tells your body how to react to the information it receives. 
c)
helps your body maintain homeostasis. 
d)
all of the above.
36.
Part of the peripheral that controls conscious activities
a)
autonomic
b)
somatic
c)
sympathetic
d)
parasympathetic
37.

Masses of myelinated nerve fibers would appear...

a)

white

b)

grey

c)

brown

d)

transparent

38.

Which of the following shows the correct path of travel?

a)

sensory neuron to interneuron to motor neuron

b)

sensory neuron to motor neuron to interneuron

c)

interneuron to motor neuron to sensory neuron

d)

It's a two way street

39.

Most of the neurons in the brain and spinal cord are...

a)

unipolar

b)

bipolar

c)

multipolar

d)

anaxonic

40.

An afferent neuron would...

a)

deliver an AP to the CNS

b)

interpret an AP being sensed

c)

deliver an AP to a gland from the CNS

d)

communicate with a motor neuron

41.

D

a)

Node of Ranvier

b)
Axon
c)
Axon Terminal
d)
Cell Body
42.

This neuroglia is star-shaped and are the most abundantly found in the body. Braces and anchors neurons to blood capillaries and help form scar tissue.

a)

Astrocytes

b)

Microglia

c)

Ependymal Cells

d)

Oligodendrocytes

43.

This neuroglia acts as a phagocyte that helps monitor the health of nearby neurons.

a)

Astrocytes

b)

Microglia

c)

Ependymal Cells

d)

Oligodendrocytes

44.

This neuroglia are ciliated and forms an epithelial-like membrane that cover parts of brain and forms inner lining that encloses spaces within brain and spinal cord

a)

Astrocytes

b)

Microglia

c)

Ependymal Cells

d)

Oligodendrocytes

45.

This neuroglia has processes that wrap around nerve fibers and produce myelin sheaths around them in the brain and spinal cord.

a)

Astrocytes

b)

Microglia

c)

Ependymal Cells

d)

Oligodendrocytes

46.

This neuroglia acts as protective and cushioning cells around the PNS

a)

Astrocytes

b)

Schwann Cells

c)

Satellite Cells

d)

Oligodendrocytes

47.

These are specialized nerve cells that receive and transmit information to other cells, (sensory, integrative, motor)

a)

Neurons

b)

Dendrites

c)

Myelin Sheaths

d)

Nodes of Ranvier

48.

These increase transmission rate of nerve impulses. Made of a white, fatty material

a)

Neurons

b)

Dendrites

c)

Myelin Sheaths

d)

Nodes of Ranvier

49.

These are the spaces between myelin sheaths, give astrocytes something to hold on to and provides easier transfer of nutrients and materials.

a)

Neurons

b)

Dendrites

c)

Myelin Sheaths

d)

Nodes of Ranvier

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