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GRADE 9 - NERVOUS SYSTEM

Total questions: 20

Worksheet time: 20mins

Name
Class
Date
1.
What is "stimuli"?
a)
A major organ in the brain that is a part of the nervous system. 
b)
What your body does to a change or a signal. 
c)
A change or a signal your body receives. 
2.
Name the two major parts of the central nervous system.
a)
The brain and the skull. 
b)
The brain and the body.
c)
The spinal cord and the brain.
d)
The spinal cord and the body. 
3.
A_______is what your body does in reaction to a stimuli. 
a)
reaction
b)
response
c)
change
4.
What are the two divisions of the nervous system?
a)
The brain and spinal cord. 
b)
The central nervous system and the skeletal system. 
c)
The central and peripheral nervous systems. 
5.
the central nervous system______________
a)
is the control center of the body. 
b)
the main body system. 
6.

What kind of cells make up the nervous system?

a)

Plasma

b)

Neurons

c)

Blood Vessels

d)

Spinal Cord

7.

What does the nervous system do?

a)

Pumps blood from your heart to your body

b)

Carries messages back and forth between your brain and the rest of your body

c)

Breaks up food

d)

Secrete hormones.

8.

What are the 3 mains parts of the Nervous System

a)

Brain, heart, blood vessels

b)

Blood Vessels, spinal cord, blood

c)

Brain, Spinal Cord, Neurons

d)

Heart, blood vessels, and blood

9.

The part of the neuron that receives messages from other neurons

a)

axon

b)

dendrite

c)

cell body

d)

Schwann cell

10.
Identify the part of the neuron
a)
axon
b)
axon terminal
c)
dendrite
d)
Node of Ranvier
11.

A sensory neuron has the following role:

a)

To carry messages from the CNS to effectors

b)

To carry messages between neurons and the CNS

c)

To carry messages from receptors to the CNS

d)

None of the above

12.

An relay neuron is also known as:

a)

A connector neuron

b)

A motor neuron

c)

A sensory neuron

d)

All of the above

13.

What is the name of the part of the neuron that is pointed out in the image?

a)

Myelin sheaths

b)

Cell Body (Soma)

c)

Axon

d)

Dendrites

14.

Type of neuron that sends nerve impulses to muscles and gland, by the command of other neurons.

a)

Motor Neurons

b)

Interneurons

c)

Sensory Neurons

15.
What is the central nervous system (CNS) made of?
a)
brain and spinal cord
b)
brain and cranial nerves
c)
spinal cord and spinal nerves
d)
cranial nerves and spinal nerves
16.
What is the purpose of the myelin sheath on the axon?
a)
To maintain temperature
b)
To improve conductivity
c)
To protect the axon
d)
To release neurotransmitters
17.
What is NOT part of the peripheral nervous system (PNS)?
a)
axons
b)
sensory receptors
c)
spinal cord
d)
motor neurons
18.
a signal molecule that transmits nerve impulses across synapses
a)
neuron
b)
neurotransmitter
c)
nerve
d)
action potential
19.
Location at which a neuron can transfer an impulse to another cell with the use of neurotransmitters is called __________.
a)
myelin sheath
b)
axon
c)
threshold
d)
synapse
20.

Which is not a reflex action

a)

Swallowing

b)

Coughing

c)

Knee jerk

d)

Closing of eyes on flashing light

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