Structure of Neuron worksheet pdf
🧠Structure of a Neuron
A neuron is the basic unit of the nervous system. It helps in carrying messages between the brain, spinal cord, and different parts of the body.
Each neuron has three main parts:
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Cell body (cyton) – controls the activities of the cell.
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Dendrites – receive signals from other neurons.
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Axon – carries signals away to other neurons, muscles, or glands.
Neurons join together to form nerve fibers, which allow quick communication inside our body.
🧠Neuron Practice Worksheet
A. Choose the correct answer (MCQs):
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The structural and functional unit of the nervous system is:
a) Brain
b) Neuron
c) Spinal cord
d) Nerve -
The part of the neuron that receives information is:
a) Axon
b) Dendrites
c) Cell body
d) Synapse -
The cell body of a neuron is also called:
a) Axon
b) Cyton
c) Synapse
d) Myelin sheath -
The axon carries impulses:
a) Toward the cell body
b) Away from the cell body
c) To the dendrites
d) To the nucleus -
The gap between two neurons is called:
a) Synapse
b) Node
c) Junction
d) Myelin -
Nerve impulses travel in the form of:
a) Mechanical signals
b) Chemical signals
c) Electrical signals
d) Magnetic signals -
The insulating covering of the axon is called:
a) Myelin sheath
b) Dendrite
c) Synapse
d) Cytoplasm -
Which part of the neuron contains the nucleus?
a) Axon
b) Cell body
c) Dendrite
d) Synapse -
The tiny branches that receive impulses from other neurons are:
a) Axons
b) Dendrites
c) Synapse
d) Nodes of Ranvier -
The end of the axon branches into:
a) Synapse
b) Axon terminals
c) Cell body
d) Dendrites -
The brain and spinal cord together form the:
a) Peripheral nervous system
b) Central nervous system
c) Autonomic nervous system
d) Reflex system -
The junction across which a nerve impulse passes from one neuron to another is:
a) Axon
b) Synapse
c) Myelin
d) Nucleus -
Neurons connect with each other through:
a) Blood vessels
b) Muscles
c) Synapses
d) Myelin -
The main function of neurons is to:
a) Transport blood
b) Transmit information
c) Store energy
d) Secrete hormones -
Which of the following protects the axon and speeds up impulse transmission?
a) Dendrites
b) Myelin sheath
c) Cell body
d) Nucleus
B. Fill in the blanks:
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The __________ is the basic unit of the nervous system.
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The __________ of a neuron receives impulses from other cells.
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The __________ carries messages away from the cell body.
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The insulating layer around the axon is called __________.
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The junction between two neurons is known as __________.
C. Match the following:
| Column A | Column B |
|---|---|
| Cell body | Controls the activities of neuron |
| Dendrites | Receive information from other neurons |
| Axon | Carries information away from cell body |
| Myelin | Insulates the axon |
| Synapse | Gap between two neurons |
D. Label the diagram
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