Parts of Neuron (with pictures)
Functions of Neuron Parts
Neuron Vocabulary
Random
100
What is another name for this cell?:max_bytes(150000):strip_icc()/neuron-anatomy-58530ffe3df78ce2c34a7350.jpg)
Neuron
100
What part of the neuron sends messages to other neurons?
Axon
100
True or False: Impulses only move in 1 direction
True
100
What are these parts of a cell called?
Terminals branches
200
What is this part of a cell called?
Cell body (soma)
200
What part of the cell receives messages from other neurons?
Dendrites
200
What is the All or None Principle?
Neurons must fire completely or not at all (never partially)
200
What is the name of the area between neurons?
The synapse
300
What are these parts of a cell called?
Dendrites
300
What is the main purpose of the cell body?
It contains the nucleus and keeps the cell alive
300
When depolarization occurs, the overall charge of ions becomes more _______
positive
300
Neurotransmitters that make the next cell more likely to fire are called ______
Excitatory
400
What is this part of a cell called? (Middle area)
Axon
400
What is the purpose of the synapse?
It allows for neuron to communicate with neighboring cell's dendrites by sending neurotransmitters
400
What is the term for the mimimum amount of excitement needed by a neuron in order to fire?
Absolute Threshold
400
What are neurotransmitters that make the next cell less likely to fire called?
Inhibitory
500
What is this part of a cell called?
Myelin Sheath
500
What is the purpose of the myelin sheath?
Acts as a cover for axon that helps electrical signals be passed faster.
500
what is the resting pause between action potentials called?
Refractory Period
500
BONUS! What is the name of the neurotransmitter that helps control mood, body temperature, sleep, and hunger?
Seratonin