Download Name: Date: Grade / Section: _____ Neurons Questions Notes 1

Name: ___________________
Date: _____________________
Neurons
Questions
1. What is a neuron?
Grade / Section: _____
Notes
● ____________ or ________ cells are the special cells that carry
information through your nervous system
● The message a neuron carries is called a _______ ___________
● A neuron has 3 main parts:
STOP AND JOT #1
Why do you think it is helpful for nerve cells to have lots of branches
(dendrites, axon tips)?
________________________________________________________
________________________________________________________
2. What are the
different types of
neurons?
STOP AND JOT #2
● There are three main types of neurons:
1. ______________ neurons pick up ____________ from the
environment and change it into a nerve impulse
2. ____________________ carry nerve impulses from one nerve to
another
3. _____________ neurons send impulses to muscles, causing
them to move in response
Explain what each neuron does in the
picture when the person puts her hand
near the flame:
Sensory Interneuron Motor -
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3. How does a nerve
impulse travel?
● A nerve impulse (message) travels in the form of an
________________ or _____________ signal
● Nerve impulses can travel as fast as ________!
● There is a tiny ________ between each axon tip and the next
structure (dendrite of another neuron, muscle cell, sweat gland,
etc.). This space is called a ______________.
● Axon tips release _____________ that allow the ___________
(message) to cross the synapse. These chemicals are called
___________________________.
● Many ________ work by helping or blocking neurotransmitters
STOP AND JOT #3
Ferries are boats that carry cars and people across a river.
If the river represents the synapse…
1. What could the ferry represent?
2. What could the cars / people represent?
3. What could the road leading the ferry represent?
SUMMARY
The cells in our nervous system are called ____________. They have
three main parts - _____________, ______________, and __________.
Neurons carry chemical or electrical messages called ___________. In
order to get from one neuron to another neuron or cell, an impulse must
cross an empty space called a _____________ with the help of
chemicals called ___________________________.
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