what are neurons? lesson 2webcommons.mssm.edu/.../sites/55/2020/04/lesson_2.pdf · lesson 2. what...
TRANSCRIPT
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What are neurons?
Lesson 2
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What did we learn last time?
our brain is inside our skull!
our brain sends messages to our body through our spinal cord & nerves.
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What did we learn last time?
These messages help us to….Run, eat, sleep, have feelings & more!
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What did we learn last time?Our brain also receives messages about
things that we...
hearsee touchtaste smell
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Today we are going to learn about:
Brain cells (called
“neurons”)
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But first...Let’s talk about cellsCells are like legos! They are the building
blocks of the body.
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But first...Let’s talk about cells
all working like little machines to keep us running.
we have trillions of cells in our body.
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But first...Let’s talk about cells
we also have blood cells, muscle cells
& many more!
brain cells (Neurons) are one type of cell found in the body. neuron
Blood cellMuscle cell
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So just like….A lot of legos make
up a houseA lot of neurons make up a brain
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Let’s take a closer look
Here’s a drawing of a neuron:
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Let’s take a closer look
Each part of the neuron
has a different job
to do.
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Let’s take a closer lookThis part (the dendrites) receives messages
from other neurons.
Hello!incoming!
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Let’s take a closer lookThis part (the cell body) is the command
center or the boss of the cell.
Let’s get this message
moving!
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Let’s take a closer lookThis part (the axon) is really long and it
carries the message.Think of the axon
like a long highway.
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Let’s take a closer lookThis part (the axon terminal) sends the
message to the next neuron.
goodbye!
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So if we want to move our foot, our brain sends this message along a chain of neurons.
zooming out
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It’s just like the game telephone!
By whispering in each other’s ears, we’re passing a
message along a chain.
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Let’s build our own neuron!
1.) Draw a neuron on a piece of paper.2.) Find snacks to represent each part of the
neuron.3.) Label your neuron’s dendrites, cell body,
axon & axon terminal.
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Here are some ideas!
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We’re done! Can you name one thing that you learned today?
1.) _________________________________