Neuron Structure

Flashcard
•
Biology
•
9th - 10th Grade
•
Hard
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15 questions
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1.
FLASHCARD QUESTION
Front
What is the main function of the cell body in a neuron?
Back
The cell body contains the nucleus and organelles, and it integrates signals received from the dendrites.
2.
FLASHCARD QUESTION
Front
What are dendrites and what is their role in a neuron?
Back
Dendrites are branching extensions of a neuron that receive signals from other neurons and transmit them to the cell body.
3.
FLASHCARD QUESTION
Front
What is an axon and what is its primary function?
Back
An axon is a long, slender projection of a neuron that conducts electrical impulses away from the cell body to other neurons or muscles.
4.
FLASHCARD QUESTION
Front
What is the myelin sheath and why is it important?
Back
The myelin sheath is a fatty layer that insulates axons, increasing the speed of electrical signal transmission.
5.
FLASHCARD QUESTION
Front
Define stimulus in the context of neuron function.
Back
A stimulus is a change in the environment that triggers a response in an organism, often detected by sensory neurons.
6.
FLASHCARD QUESTION
Front
What direction does an electrical signal travel in a neuron?
Back
An electrical signal travels from the dendrites to the cell body and then down the axon.
7.
FLASHCARD QUESTION
Front
What are Schwann cells and their role in the nervous system?
Back
Schwann cells are a type of neuroglia that produce myelin in the peripheral nervous system, aiding in faster signal transmission.
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