Divisions of the nervous system : week two Flashcards
the human nervous system main functions
- receive information
- process information
- coordinate response
central nervous system components
- the brain
- the spinal cord
spinal cord
- like a highway
- long, thin bundle of nerve tissue
- route for messages to and from the brain
peripheral nervous system main function
- transmit information to and from the CNS
to CNS from muscles, organs and glands (internal)
and sensory organs (external),
(and vice versa)
what does the somatic nervous system do
communicates all voluntary movement
carries sensory information
- to the CNS
and carries motor information
- from the CNS
what does the autonomic nervous system do
- provides feedback to the brain about the body’s activities
- connects the CNS to the body’s internal organs and glands
organs - heart, stomach, liver
glands - sweat, salivary, adrenal
divisions of the autonomic nervous system
- sympathetic nervous system
- parasympathetic nervous system
what is the sympathetic nervous system responsible for
- increasing the activity of most visceral muscles, organs and glands
- prepares the body for vigorous activity
- enhances survival response to emergency situation
what is the parasympathetic nervous system responsible for
decreasing the amount of activity of most visceral muscles, organs and glands
where is the spinal cord
extends from base of the brain to the lower back
subdivisions of the peripheral nervous system
- somatic nervous system
- autonomic nervous system
peripheral nervous system components
entire network of nerves outside of the CNS
what is the sympathetic nervous system activated by
activated by a stressor or fear stimulus
