🧠 Part 1: Neuron Structure

1. Label the parts of the neuron in the diagram below:

2. Match each neuron part to its correct function by drawing a line:

Cell body

Dendrites

Axon

Myelin sheath

Synaptic terminals

Insulates the axon and speeds up signal transmission

Receives signals from other neurons

Contains the nucleus and processes information

Transmits signals away from the cell body

Passes signals to the next neuron

3. What is the main function of a neuron in the nervous system?

To pump blood around the body

To transmit electrical signals and coordinate responses

To digest food

To filter waste products

⚡ Part 2: Types of Neurons

4. Fill in the blanks about the three types of neurons:

Sensory neurons carry signals ________ the central nervous system from sense organs.

Motor neurons carry signals ________ from the central nervous system to muscles and glands.

Interneurons connect sensory and motor neurons within the ________ nervous system.

5. Which type of neuron would be involved in each scenario? Write S (sensory), M (motor), or I (interneuron):

a) Feeling heat from a flame: _____

b) Your hand pulling away from the flame: _____

c) Processing the heat signal in your spinal cord: _____

d) Seeing a bright light: _____

e) Blinking your eyes: _____

6. What happens to signal transmission if the myelin sheath is damaged?

Signals travel faster

Signals travel slower or may be disrupted

Nothing changes

The neuron produces more signals

🔄 Part 3: Neurons in Action

7. Describe the pathway of a reflex action when you touch a hot object. Include the types of neurons involved:

8. Explain why the nervous system is often compared to a communication network:

9. Draw a simple diagram showing how three types of neurons work together in a reflex action:

Neuron Structure and Function

Neuron Structure and Function

🧠 Part 1: Neuron Structure

⚡ Part 2: Types of Neurons

🔄 Part 3: Neurons in Action

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