Central Nervous System/Neuron/Synapse
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CNS (central nervous system) - ANS-Includes the brain and the spinal cord
Spinal cord - ANS-Part of the central nervous system
PNS (peripheral nervous system) - ANS-Made up of the smaller branches of nerves that
reach the other parts of the body
Neurons - ANS-Strings of long thin cells that send messages to and from the brain that
travel along the nerves
Synapse - ANS-The space between the neurons ( junction or connection between
neurons )
Neurotransmitters - ANS-A neuron transmits its impulses or messages to another
neuron across the synapse by releasing chemicals that are known as neurotransmitters.
SNS (Somatic nervous system) - ANS-Refers to the part of the peripheral system that
controls voluntary activities
ANS (autonomic nervous system) - ANS-Refers to the part of the nervous system that
controls involuntary activities, or those that ordinarily occur automatically, such as
heartbeat, stomach activity, and so on.
Regulate - ANS-Control or maintain
Voluntary - ANS-Acts such as lifting your hand to turn a page.
The Central Nervous System is divided into how many parts? - ANS-Two
What is the first part? What does it include? - ANS-The central nervous system which
includes the brain and the spinal cord.
, What is the second part? What do they do? - ANS-The peripheral system which
includes smaller branches of nerves that reach the other parts of the body.
Somatic Nervous system ( 3 examples of what it does ) - ANS-1- Lifting your hand to
turn a page
2- Raising your hand
3- Walking
Autonomic Nervous system ( 3 examples of what it does ) - ANS-1- Heartbeat
2- Stomach Activity
3- Change in blood pressure
What are neurons? - ANS--Neurons are long, thin cells of nerve tissue that send
messages to and from the brain.
-Neural connections are made over spaces between neurons called synapses through
chemicals called neurotransmitters.
-Neurons are related to senses, muscles, or connect to other neurons.
-Neurons can travel over and over again, hundreds of times a minute.
Dendrites - ANS-Dendrites are short, thin fibers that protrude from the cell body that
receive impulses, or messages, from other neurons.
Dendrites receive impulses from other neurons, and then transfer them to the cell body
Cell Body - ANS-Largest part of the neuron.
The cell body processes the impulse from other neurons and also provides metabolic
support for the cell. It also contains all the neurons' DNA.
Axon - ANS-They are the messengers.
They travel long distances to be able to deliver messages to a target cell.
The Axon Terminal - ANS-The ends of the axons.
They are aligned oppositely from the other cell dendrites.
Explain the myelin sheath - ANS-The myelin sheath is a white fatty substance that
surrounds the axon. It then proceeds to provide insulation, protection, and efficiency to
the axon.
What is a synapse? - ANS-The small space or gap between the axon terminals of one
neuron and the dendrites of another neuron is called a synapse. It is a junction or
connection between neurons.
1 of 3
CNS (central nervous system) - ANS-Includes the brain and the spinal cord
Spinal cord - ANS-Part of the central nervous system
PNS (peripheral nervous system) - ANS-Made up of the smaller branches of nerves that
reach the other parts of the body
Neurons - ANS-Strings of long thin cells that send messages to and from the brain that
travel along the nerves
Synapse - ANS-The space between the neurons ( junction or connection between
neurons )
Neurotransmitters - ANS-A neuron transmits its impulses or messages to another
neuron across the synapse by releasing chemicals that are known as neurotransmitters.
SNS (Somatic nervous system) - ANS-Refers to the part of the peripheral system that
controls voluntary activities
ANS (autonomic nervous system) - ANS-Refers to the part of the nervous system that
controls involuntary activities, or those that ordinarily occur automatically, such as
heartbeat, stomach activity, and so on.
Regulate - ANS-Control or maintain
Voluntary - ANS-Acts such as lifting your hand to turn a page.
The Central Nervous System is divided into how many parts? - ANS-Two
What is the first part? What does it include? - ANS-The central nervous system which
includes the brain and the spinal cord.
, What is the second part? What do they do? - ANS-The peripheral system which
includes smaller branches of nerves that reach the other parts of the body.
Somatic Nervous system ( 3 examples of what it does ) - ANS-1- Lifting your hand to
turn a page
2- Raising your hand
3- Walking
Autonomic Nervous system ( 3 examples of what it does ) - ANS-1- Heartbeat
2- Stomach Activity
3- Change in blood pressure
What are neurons? - ANS--Neurons are long, thin cells of nerve tissue that send
messages to and from the brain.
-Neural connections are made over spaces between neurons called synapses through
chemicals called neurotransmitters.
-Neurons are related to senses, muscles, or connect to other neurons.
-Neurons can travel over and over again, hundreds of times a minute.
Dendrites - ANS-Dendrites are short, thin fibers that protrude from the cell body that
receive impulses, or messages, from other neurons.
Dendrites receive impulses from other neurons, and then transfer them to the cell body
Cell Body - ANS-Largest part of the neuron.
The cell body processes the impulse from other neurons and also provides metabolic
support for the cell. It also contains all the neurons' DNA.
Axon - ANS-They are the messengers.
They travel long distances to be able to deliver messages to a target cell.
The Axon Terminal - ANS-The ends of the axons.
They are aligned oppositely from the other cell dendrites.
Explain the myelin sheath - ANS-The myelin sheath is a white fatty substance that
surrounds the axon. It then proceeds to provide insulation, protection, and efficiency to
the axon.
What is a synapse? - ANS-The small space or gap between the axon terminals of one
neuron and the dendrites of another neuron is called a synapse. It is a junction or
connection between neurons.
