Ch - 25 Nervous System Flashcards
1
Q
Peripheral Nervous System (PNS)
A
all parts of nervous system excluding brain and spinal chord
2
Q
Neuron
A
a nerve cell that is specialized to recieve and conduct electrical impulses
3
Q
Nerve
A
a collection of axons grouped with blood vessels and connective tissue
4
Q
Brain
A
the main control center of the nervous system
5
Q
integumentary system
A
the organ system that forms a protective covering on the outside of the body
6
Q
reflex
A
an involuntary response to a stimulus
7
Q
feedbsck mechanism
A
a cycle of events in which info from one step affects a previous step
8
Q
retina
A
the light-sensitive inner layer of the eye
9
Q
cochlea
A
a coiled tube in the inner ear that is needed to hearing
10
Q
Central Nervous System (CNS)
A
the brain and spinal chord
