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Neurons and Neurogenesis Overview

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Questions and Answers

What are the three main parts of a neuron?

Cell body, Dendrites, Myelin

Cell body, Axon, Dendrites (correct)

Dendrites, Synapses, Neurotransmitters

Axon, Synapse, Glia

Why are synapses important in the brain?

They carry nutrients to neurons.

They increase the speed of electrical signals.

They protect neurons from damage.

They facilitate communication and are crucial for learning and memory. (correct)

What happens in the brain when learning something new?

The number of neurons increases rapidly.

New synaptic connections are formed. (correct)

Existing synapses shrink in size.

Neurons absorb more myelin.

How does aerobic exercise affect the brain?

<p>It may contribute to neurogenesis.</p> Signup and view all the answers

What is the approximate number of synapses in the human brain?

<p>100 trillion - 1,000 trillion</p> Signup and view all the answers

Study Notes

Neurons

Neurons are cells with three main parts: a cell body, an axon (sends signals), and dendrites (receives signals).
The human brain has 86-100 billion neurons
Neurons connect to each other via synapses.

Synapses

Synapses are gaps between neurons.
Electrical signals pass across synapses.
Synapses are crucial for learning and memory.
New synaptic connections form with effort and learning.
Synapses can be repaired if a body part is damaged.
The brain can make new neurons in some areas, like the hippocampus, a part of your brain where learning and memory happen

Neurogenesis

Neurogenesis is the creation of new neurons.
It occurs in some parts of the brain, such as the hippocampus
Exercise may help with neurogenesis.
A 2016 study in Finland found that running regimens increased neurogenesis in rats

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Description

Explore the intricate world of neurons, synapses, and neurogenesis in this quiz. Learn about the structure of neurons, the importance of synapses in learning and memory, and the process of creating new neurons in the brain. This quiz will test your knowledge on how these fundamental concepts interact in the human body.