Nerves and Synapses

The Nervous System:

• A system that makes you nervous

• A complicated system that includes the brain and your heart

• A magical place in the sky (CLICK ME FOR A SURPRISE!)

• A complex system of nerves that sends messages throughout the body

Tags

NGSS.HS-LS1-3

What is a neuron?

• A ron of the neu variety

• A cell in the heart

• Some random thing... I wasn't listening

• A nerve cell

Tags

NGSS.MS-LS1-3

The space between two neurons over which chemical messages are passed is called the ________ .

• brain stem

• dendrite

• axon

• synapse

What is the name of the chemical message that travels across the synapse?

• Axon

• Dendrite

• Action Potential

• Neurotransmitter

The body receives information from the environment through the _________ .

• sensory nerves

• motor nerves

• spinal cord

• synapse

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NGSS.MS-LS1-8

A ___________ carries instructions to the muscles from the spinal cord.

• motor nerve

• sensory nerve

• dendrite

• cerebellum

Each neuron contains one long trunk called a(n) ________.

• dendrite

• synapse

• brain stem

• axon

__is when a rapid change in membrane polarity causes a signal to propagate down the axon

• Polarization

• Depolarization

• Repolarization

• Refraction

__ is the fact that neurons either fire or not, like flipping a light switch?

• Polarization

• All-or-none

• Absolute Refractory Period

• Relative Refractory Period

True or False? Dendrites receive signals and axons send signals.

• true

• false

Tags

NGSS.MS-LS1-2