SAC 1A Flashcards
define nervous system
a communication system that consists of networks of neurons that connect the brain, spinal cord and other parts of the body to each other via an electrical signal.
what are the three main functions of the nervous system?
- receive
- process
- coordinate
examples of sensory receptors
- ears, eyes, skin
what are the two divisions of the nervous system?
- central NS
- peripheral NS
what is the role of the central nervous system?
responds to sensory stimuli from the peripheral NS, coordinates the body with communication to different areas.
what are the two dimensions of the central nervous system?
Brain, spinal cord
what is the role of the brain in the central nervous system?
what we feel, think and do
what is the role of the spinal cord in the central nervous system?
connects the brain and the peripheral NS and initiates spinal reflexes
what are the three sections of the brain and what are they responsible for?
- hindbrain- survival functions
- midbrain- reticular function
- forebrain- complex processes like emotion
explain SAME
sensory
afferent
motor
efferent
what are the two divisions of the peripheral NS?
somatic and autonomic
what is the peripheral nervous system responsible for?
carries information to and from CNS and contains all nerves outside the CNS
what is the role of the somatic NS?
carries sensory information to the CNS and motor from CNS. controls concious and voluntary movements and skeletal muscles. and spinal reflex.
describe the role of the autonomic NS?
controls all non skeletal muscles like organs, unconcious movements
what are the two division of the autonomic NS?
- sympathetic
- parasympathetic
