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The Nervous System

Across
Regulates hunger and thirst. Part of the pituitary gland
Reacts to a physical stimulus in the environment
Part of the peripheral nervous system, supplies organs and glands with materials they need.
Part of the Central Nervous System, is connected to the brain
The biggest part of the brain. Controls voluntary movement
Consists of the brain and spinal cord
Part of the autonomic nervous system, helps increase the speed of involuntary actions.
Regulates involuntary actions. Part of the brain stem
The space between two neurons
In the back of the eye. Receives light and converts it into signals. Has many rods and cones on it
Acts in a response to a stimulus
Part of the peripheral nervous system involved with voluntary controls.
An electrical signal sent throughout the body through neurons
Transmits the nerve signal
Down
Contains the autonomic and somatic nervous systems
The pathway involved in a reflex action
Protects the inner parts of the eye. Humans can scratch this easily
Transmit signals across a synapse from one neuron to another
Help an organism see light. Located on the retina
The back of the brain. Coordinates muscular activity
A hole in the eye. Regulates how much light can enter the eye
Receives the signal from another neuron
Part of the ear, a spiral shaped part
Reflects the light onto the fovea. Will affect whether a person is far or near-sighted