3.1 Flashcards
what does the nervous system do
- it analyses sensory info from the body and the external environment
- it then stores some aspects and makes decisions regarding appropriate responses & behaviours
- it makes motor responses by initiating muscular contractions or hormonal responses by initiating glandular secretions
what is the human nervous system made up of
the cns and the pns
what is the cns made up of
the brain and spinal cord
what does the pns consist of
the peripheral nervous system
what is the function of the parts of the cns
brain - processing info
spinal cord - connects brain with pns
what is the function of the parts of the pns
peripheral nerves - carries info to and from all parts of the body
what controls the voluntary function of the pns
the somatic nervous system
what does the sns contain
sensory and motor neurons
what do sensory neurons do
take impulses from sense organs to the cns
what do motor neurons do
take impulses from the cns to muscles and glands
what controls the involuntary function of the pns
automatic nervous system
what does the ans consist of
sympathetic & parasympathetic systems
are the parasympathetic and sympathetic systems antagonistic
yes
define antagonistic
having opposite effects
what does the sympathetic system do
speeds up heart and breathing rate
slows down peristalsis and production of intestinal secretions
