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PLTW HBS Unit 2.2-Neurons

Total questions: 60

Worksheet time: 3600secs

Name
Class
Date
1.

Motor neurons carry impulses __________ the brain

a)

towards

b)

away from

c)

within

2.

Which of the following describes the function of the Na/K Pumps in the neuron membrane?

a)

depolarizing the cell by allowing Na into the cell

b)

repolarizing the cell by allowing K out of the cell

c)

rearranging Na and K back to return cell to resting state

3.

Which of the following correctly outlines a reflex arc?

a)

Motor neuron - interneuron - sensory neuron

b)

Sensory neuron - interneuron - motor neuron

c)

Sensory neuron - interneuron - brain - motor neuron

4.

The dendrites of a neuron carry a stimulus

a)

Towards the cell body

b)

Away from the cell body

c)

Through the cell body

5.

Carries information from sensory receptors to CNS

a)

Sensory neuron

b)

Association neuron

c)

Interneuron

d)

Motor neuron

6.

Carries info from CNS to muscles

a)

Sensory neurons

b)

Interneurons

c)

Association neurons

d)

Motor neurons

7.

A genetic disease characterized by uncontrollable body movements & degeneration of the nervous system

a)

Huntington's Disease

b)

Multiple Sclerosis

c)

Alzheimers

d)

Parkinson's Disease

e)

Epilepsy

8.
a junction at which a neuron meets another cell
a)
axon
b)
dendrites
c)
myelin sheath
d)
synapse
9.

Identify the structure labelled C

a)

dendrite

b)

neurotransmitter

c)

receptor

d)

schwann cell

10.

Identify the structure labelled A

a)

neurotransmitter

b)

synapse

c)

action potential

d)

myelin

11.

A condition caused by the loss of neurons that release acetylcholine leading to memory loss and other mental functions

a)

Huntington's Disease

b)

Multiple Sclerosis

c)

Alzheimers

d)

Parkinson's Disease

e)

Epilepsy

12.
When a neuron is resting, the inside of the axon has a ____________ charge.
a)
positive
b)
negative
13.
Neurotransmitters are released from the
a)
Dendrites
b)
Post-synaptic neuron
c)
Presynaptic neuron
d)
Axon
14.
W
a)
Axon Terminal Button
b)
Neurotransmitters
c)
Dendrite
d)
Synapse
15.
Y
a)
Axon Terminal Button
b)
Neurotransmitters
c)
Dendrite
d)
Synapse
16.

What do we call a nerve cell that is the basic working unit of the brain and nervous system?

a)

axon

b)

neuron

c)

dendrite

d)

neurotransmitter

17.

B

a)

Dendrite

b)

Axon

c)

Axon Terminal

d)

Cell Body

18.
Label the Neuron-What does the letter "A" represent?
a)
Axon
b)
Dendrite
c)
Axon Terminal
d)
Cell Body
19.
Label the Neuron-What does the letter "E" represent?
a)
Schwann Cell
b)
Node of Ranvier
c)
Axon Terminal
d)
Myelin Sheath
20.
What is the chemical used by a neuron to transmit an impulse across a synapse to another nerve cell?
a)
Neurotransmitters
b)
Synapse
c)
Threshold
d)
Impulse
21.
-70 mV is the measure of a
a)
Threshold Potential
b)
Action Potential
c)
Resting Potential
d)
End Point Potential
22.
When a membrane potential reaches +30mV, ________ channels open, ________ occurs, and ________ channels close.
a)
Sodium, depolarization, potassium
b)
Potassium, depoloarization, sodium
c)
sodium, repolarization, potassium
d)
postassium, repolarization, sodium
23.
The sodium-potassium pump is involved in establishing the resting membrane potential. 
a)
True
b)
False
24.
Multiple sclerosis is an autoimmune disease in which the body's own immune system destroys the _____________ of the nerve axons. 
a)
Myelin
b)
Dendrites
c)
Axon Terminal
d)
Nodes of Ranvier
25.
The brain's supporting cells are called: 
a)
glial cells
b)
mitochondria
c)
neurons
d)
nuclei
26.
Nerve impulses within the neuron are sent in _____ form
a)
Electrical
b)
Chemical
c)
Electro-chemical
d)
Petrochemical
27.

During resting membrane potential, the inside of a neuron has a _______________ charge

a)

negative

b)

positive

c)

neutral

28.

Neurotransmitters are stored in which structure of the neuron?

a)

Cell body

b)

Dendrite

c)

Axon terminals

29.

Myelin is located on the ____________ and functions to ____________ nerve transmission.

a)

dendrite - speed up

b)

dendrite - slow down

c)

axon - speed up

d)

axon - slow down

30.

Neurotransmitters bind to complementary sites on a cell called

a)

receptors

b)

axon terminals

c)

cell bodies

31.

Depolarization occurs when the inside of a cell becomes _________________ due to _________ gates opening.

a)

positive - potassium

b)

negative - potassium

c)

positive - sodium

d)

positive - sodiium

32.

The spaces (C on diagram) between myelin on an axon are called

a)

axon gaps

b)

nodes of ranvier

c)

dendrite dents

33.

Which of the following nervous system disorders occurs as a result of tangled plaques forming in brain tissue?

a)

Huntington's disease

b)

Alzheimer's disease

c)

Parkinson's disease

34.

Which of the following disorders is associated with a decrease in the neurotransmitter called dopamine?

a)

Parkinson's disease

b)

Epilepsy

c)

ALS

35.

Which of the following diagnoses best describes a disorder that involves seizure activity?

a)

MS

b)

ALS

c)

Epilepsy

36.

Which of the following diseases does NOT affect memory or mental cognition?

a)

ALS

b)

Huntington's

c)

Alzheimers

37.

What is the function of the myelin sheath?

a)

To insulate and speed up the signal transmission

b)

To store the neurotransmitters

c)

To insulate and slow down the signal transmission

d)

To receive the signal from the previous neuron

38.

What neuron structure receives the message?

a)

Dendrites

b)

Cell Body

c)

Axons

d)

Vesicles

39.

In which direction does the electric signal travel in a neuron?

a)

From the axon terminal to the dendrite

b)

From axon to cell body to dendrite terminal

c)

From the dendrite to cell body to axon to axon terminal

40.

What kind of neuron is this that receives information from the environment?

a)

Motor Neuron

b)

Sensory Neuron

c)

Interneuron

d)

Association Neuron

41.

Which of these describes the neuron?

a)

Myelinated

b)

Nonmyelinated

42.

Which of these describes the neuron?

a)

Unipolar

b)

Multipolar

43.

What type of neuron is this that relays messages to and from other neurons?

a)

Motor Neuron

b)

Sensory Neuron

c)

Interneuron

44.

What type of neuron is this that receives signals from the CNS and carries them to an effector?

a)

Motor Neuron

b)

Association Neuron

c)

Interneuron

d)

Sensory Neuron

45.

Examine the image. If you see a bug, what type of neuron does the SEEING?

a)

Sensory Neuron

b)

Interneuron

c)

Motor Neuron

46.

Examine the image. If you see a bug and decide to step on it, what neuron does the DECIDING?

a)

Sensory Neuron

b)

Interneuron

c)

Motor Neuron

47.

Examine the image. If you see a bug and decide to step on it, what neuron sends signals so you STEP on it?

a)

Sensory Neuron

b)

Interneuron

c)

Motor Neuron

48.

A patient has Multiple Sclerosis, which destroys Myelin Sheath. What might occur?

a)

Signals may be lost or travel slowly

b)

Brain function decreases

c)

Muscles waste away because they aren't stimulated

d)

Signals travel too quickly

49.

This is a reflex neural pathway. Does it travel to the brain?

a)

Yes

b)

No

50.

In order to build muscles, what kind of neurons had to continually signal muscles to contract?

a)

Interneurons

b)

Motor Neurons

c)

Sensory Neurons

51.

Put these neurons in the correct order for a reaction neural pathway.

a)

Sensory - Interneuron - Motor

b)

Motor - Interneuron - Sensory

c)

Sensory - Motor - Interneuron

d)

Motor - Sensory - Interneuron

52.

Lobe of brain associated with body sensations: touch, temperature, pain

a)

Frontal

b)

Parietal

c)

Temporal

d)

Occipital

53.

An automatic response to a stimulus that often does not pass through the brain

a)

Sense

b)

Reaction

c)

Reflex

d)

Contraction

54.

The place at which a nerve impulse passes from one neuron to another

a)

Axon

b)

Synapse

c)

Schwann cell

d)

Neurotransmitter

55.

Insulating coat of cell membrane from Schwann cells

a)

Nucleus

b)

Neurotransmitter

c)

Myelin sheath

d)

Nodes of Ranvier

56.

Transmits nerve impulses across a synapse

a)

Axon terminal

b)

Dendrites

c)

Synaptic cleft

d)

Neurotransmitter

57.

Autoimmune disorder which destroys the myelin sheath

a)

Epilepsy

b)

Multiple sclerosis

c)

ALS

d)

Parkinson's

58.

Neurologic disorder which affects motor neurons leading to progressive weakness, fatigue of arms/legs, and muscle twitches.

a)

Epilepsy

b)

Muscular dystrophy

c)

ALS

d)

Alzheimer's

59.

Momentary reversal in electrical potential across a plasma membrane

a)

Reflex response

b)

Reaction

c)

Impulse conduction

d)

Action potential

60.

Membrane protein responsible for restoring original concentration of ions in neurons

a)

Na+ channel

b)

Na+/K+ pump

c)

K+ channel

d)

Ca++ channel

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