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any change or signal in the environment that an organism can recognize and react to is called _______.
A reaction to a stimulus.
What does your nervous system include?
The message that a neuron carries.
Picks up a stimulus and converts it into a nerve impulse.
Individual nerve cells that carry information through your nervous system.
Carries a nerve impulse to another interneuron or to a motor neuron.
Sends an impulse to a muscle or gland , enabling it to respond.
Includes the brain and spinal cord.
Includes all nerves outside of the cns.
The largest organ in the nervous system as well as the control central of the cns.
A thick column of nervous tissue that links the brain to the peripheral nervous system.
Where you think and store memories.
Controls balance and coordination.
controls involuntary movment.
what does your brain stem connect to.
What surrounds and protects your spinal cord.
What does the peripheral nervous system include/
controls voluntary actions.
Controls involuntary actions.
An opening that lets light enter the eye.
a ring of muscle that controls the amount of light that enters the eye.
light passes through this.
the back of the eye that contains light- sensitive cells that produce nerve impulses.
Where do the impulses from the retina travel to.
4 main taste sensations.
a nerve cell that responds to chemical molecules in the air.
Alerts you to danger.
regulates most activities by sending nerve impulses throughout the body.
regulates short term and long term activities by sending chemicals throughout the body.
an organ that produces or regulates a chemical.
A chemical produced by an endocrine gland.
Speeds up your heart rate and breathing rate.
kicks in when your angry, frightened, or excited.
Cells that are specialized in a way that enables them to recognize a hormone's chemical structure.
The part of your brain that links the two syestems.
Works with the hypothalamus to control many activities.
GOOD
