Nervous System
What is the nervous system in charge of?
Sending signals to the different parts of your body.
What do the structures within the ear help maintain?
What is homeostasis?
The regulation of steady, life-maintaining conditions inside an organism.
What is the retina?
The tissue at the back of the eye that is sensitive to light energy.
What is the function of the cerebrum?
Thinking.
What two senses are related?
Smell and taste.
What are dendrites and axons?
Dendrites receive impulses from other neurons and send them to the cell body. Axons carry the impulses away from the cell body.
What is the cochlea?
A fluid-filled structure shaped like a snail's shell.
Involuntary, automatic response to a stimulus.
What is the peripheral nervous system?
All the nerves outside the CNS.
Mucus.
What is the synapse?
The small space that the neuron passes.
What are the olfactory cells?
The molecules stimulate sensitive nerve cells.
What is the central nervous system?
The brain and spinal cord.
What does the cerebellum do within the brain?
Coordinate voluntary muscle movement, maintain muscle tone and help maintain balance.
What are three separate parts of the eye?
Retina, lens, pupil, cornea, iris, blood vessel, optic nerve.
What is the brain stem?
Base of the brain; extends from the cerebrum and connects the brain to the spinal cord.
What are the taste buds?
Major sensory receptors for taste, on your tongue.
What is the function of the lens within the eye?
Reflecting light to form a focal point.
What are the two systems within the peripheral nervous system?
Somatic and autonomic systems.
Your internal organs contain what?
Several kinds of sensory receptors that respond to touch, pressure, pain, and temperature.
A protective covering.
Taste buds respond to which type of stimuli?
Chemical.
How does your body know to keep its balance?
Structures within the inner ear called the ampullaris and maculae.