Transcript central nervous system

Review of the Organ System
Excretory System
Which system includes the following
organs?
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kidneys
skin
lungs
bladder
Excretory System
Name the organ system that:
• removes wastes from the body such as
urea and excess water
Digestive System
Which system includes the following organs?
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mouth
esophagus
stomach
small intestine
large intestine
rectum
liver
gall bladder
Digestive System
Name the organ system that:
• breaks down food into simpler
molecules that can be used by the body
chemical digestion
• where food is broken down by chemicals
in the body
urea
• a chemical produced when proteins are
broken down in the body
mechanical digestion
• where food is physically broken down into
smaller pieces by chewing
Circulatory System
Which system includes the following
organs?
• heart
• blood
• blood vessels
Respiratory System
Name the organ system that:
• provides body with oxygen
• removes carbon dioxide from body
Respiratory System
Which system includes the following
organs?
• trachea
• bronchi
• lungs
Circulatory System
Name the organ system that:
• brings oxygen, nutrients, and
hormones to cells
• takes wastes away from cells
• regulates body temperature
Nervous System
Which system includes the following
organs?
• Brain
• Spinal cord
• Nerves
Nervous System
Name the organ system that:
• controls and coordinates the body
• responds to stimuli inside and outside
the body
• controls the senses
sensory neuron
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a neuron that picks up stimuli from the
environment and sends a nerve impulse
toward the brain
sensory neuron
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The type of neurons stimulated when you
hear a loud noise or touch something
motor neurons
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a neuron that carries an impulse to
muscles telling them to contract or relax
sensory neuron
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a neuron that picks up stimuli from the
environment and send a nerve impulse
toward the brain
interneurons
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neurons found in the brain and spinal
cord that carry impulses between
sensory and motor neurons
peripheral nervous system
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the nerves that branch out from the
central nervous system
reflex
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an automatic response that occurs
without conscious control
dendrite
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the part of the neuron that carries
impulses toward the cell body; receives
impulses
impulse
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a message that a neuron carries
relax
• when a muscle returns to its original
length
motor neurons
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the type of neurons used to jerk your arm
in response to a noise
contract
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when a muscle gets shorter
central nervous system
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the brain and the spinal cord; the control
center of the body
axons
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the part of the neuron that carries
impulses away from the cell body; sends
them to other neurons
neurons
• nerve cells; the basic unit of the nervous
system
The
bicep
relaxes.
The
tricep
relaxes.