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Where is the nucleus and what does it do?
Brain of the cell and processes the message and decides if it keeps going or stops.
Where are the dendrites and what do they do?
Receive incoming messages.
Where is the cell body and what does it do?
Protects the nucleus.
Where are the myelin sheaths and what do they do?
Protects the axon.
Where are the axon terminals and what do they do?
Releases the message to the next neuron.
Where is the axon and what does it do?
Pathway for the message.
Where is the synapse gap and what does it do?
Take one neuron to the next
Where are the neurotransmitters and what do they do?
Tiny messages.
Where are the sensory neurons and what do they do?
Send messages from the body to the brain.
Where are the inter neurons and what do they do?
Live in the brain and spinal cord and communicate with them.
Where are the motor neurons and what do they do?
Send messages from the brain/spinal cord to the body.
Action potential
Neuron chain created and sent a message
What is the nervous system?
The system our brains use to communicate within itself and across our bodies
What is the central nervous system?
Deals with the brain and spinal cord.
What is the peripheral nervous system?
Nerve systems reaching out from spinal cord across the body.
What does the peripheral nervous system lead to?
The sensory and motor divisions.
What is sensory division?
Sends messages from the body to the brain
What is motor division?
Sends messages from brain to body.
What does the motor division lead to?
Somatic and autonomic divisions.
What is the somatic division?
Messages we can control like speech or walking
What is the autonomic division?
Regions of our body our brain controls for us like digestion.
What does the autonomic division lead to?
Sympathetic and parasympathetic divisions.
What does the sympathetic division do?
Communication speeds things up like heart rate and breathing.
What does the parasympathetic division do?
Communication slows things down like heart rate and breathing.
How many neurons are in a human brain?
100 billion.
What is a neuron?
Foundational cell in the nervous system that lets us communicate.
What are glial cells?
Hold the neurons together/protect them.
What is acetylcholine?
Involved with attention, memory, arousal, muscle contractions.
What is serotonin?
Involved with sleep, mood, appetite.
What is dopamine?
Involved with sensation and movement control.
What are endorphins?
Pain relief.
Order of the nervous system.
Central, Peripheral, sensory and motor divisions, somatic and autonomic divisions, sympathetic and parasympathetic divisions.
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