Untitled Deck Flashcards
Cornea
a clear tissue that covers the front of the eye.
Pupil
opening in which light enters the eye.
Iris
a circular structure that surrounds the pupil and regulates how much light enters the eye.
It gives the eye its color.
Lens
flexible structure that focuses light.
Retina
lines the back of the eye and contains light-sensitive cells.
Nearsightedness
see near objects clearly but not distant ones.
Farsightedness
see distant objects clearly but not close ones.
Eardrum
is a membrane that vibrates when sound strikes it.
Cochlea
a snail-shaped tube that is lined with sound receptor cells.
Semicircular canals
which helps your CNS maintain its balance.
Central Nervous System
It acts like a traffic cop and is made of the brain and the spinal cord.
Peripheral Nervous System
includes the nerves outside the CNS and they are like car drivers.
Brain
is the control center.
Spinal cord
is a thick column of nervous tissue that links the brain to the PNS.
Cerebrum
interprets the things you feel and carries out a complex mental process like learning or remembering.
Cerebellum
Coordinates your muscle actions and helps you keep balance.
Brain stem
controls your body’s involuntary actions such as heartbeat.
Left half
It is usually associated with logical thinking.
Right half
is usually associated with creative thinking and artistic skills.
Somatic nervous system
controls voluntary actions such as using a fork.
Autonomic nervous system
controls involuntary actions such as digesting food.
Reflex
an automatic response that occurs without conscious control.
Concussion
occurs when the soft tissue of the brain collides with the skull causing it to bruise.
Involuntary
an action not in your control.
