Neurons Flashcards by Scarlett Daniels | Brainscape

Q

Neuron definition

A

Nerve cells

Process and transmit messages

Through chemical and ectrical signals

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Q

Sensory Neuron

A

Messages from PNS -> CNS

long dentrites

Shirt axon

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Q

Relay neuron

A

Connects sensory to motor neuron

Short dendrites

Short axon

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Q

Motor neuron

A

Connects CNS to muscles/ glands (effectors)

Short dendrites

Long axon

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Q

Cell body

A

Contains nucleus

Produces proteins

Needed to function

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Q

Nucleus def

A

Contains genetic material

Within the neuron

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Q

Dendrites

A

Branch - like features protrude from cell body

Carries nerve impulses

From neighbouring neurons to cell body

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Q

Axon

A

Carries electrical impulse from cell body

Down length of neuron

Covered in myelin sheath

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Q

Myelin sheath

A

Fatty layer

Surrounds and protects axon

Helps speed up electrical transmission of impulse

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Q

Nodes of raniver

A

Gaps between myelin sheath

= speeds up transmission of impulse

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Q

Terminal buttons

A

At end of axon

Communicate with next neuron

On other side of synaptic cleft

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