Chapter 25 vocabulary Flashcards
Central nervous system
the Brian and spinal cord
Peripheral nervous system
All parts of the nervous system except for the Brain and the spinal cord
Neuron
A nerve cell that is special receive and conduct
Nerve
a collection of nerve fibers though which impalces travel between the central nervous system
Brain
the mass of nerve tissue that is the main control center of the nervous system
Integumentary system
the organ system that forms a protective covering on the outside of the body
Reflex
an involuntary and almost immediate movement in response to a stimulus
Feedback mechanism
A cycle of events in which information from one step controls or affects a precious step
Retina
the light sensitive inner layer of the eye it receives images formed by the lens and transmits them through the optic nerve to the brain
Cochlea
a coiled tube that is found in the inner ear and that is essential to hearing
