divisions of the nervous system Flashcards
what do biopsychologists argue
argue for a genetic basis for behaviour
what does the biopsychology approach assume
assumes behaviour and experiences are caused by activity in nervous system
what are the 8 divisions of the nervous system
- peripheral nervous system
- central nervous system
- brain
- spinal cord
- somatic nervous system
- autonomic nervous system
- sympathetic nervous system
parasympathetic nervous system
what is within the central nervous system
brain and spinal cord
what does the central nervous system control
physical movement + regulate homeostatic function
how many areas are within the brain
- cerebrum
- cerebellum
- diencephalon
- brain stem
what is the role of the spinal cord
relay info between brain and body
what does the spinal cord allow the brain to do
allows the brain to monitor and regulate bodily processes
how is the spinal cord connected to parts of the body
through spinal nerves
what happens if the spinal cord becomes damaged
once spinal cord becomes damaged then the nerves below damage will be cut off
what is the peripheral nervous system comprised of
comprised of all nerves outside CNS
what is the function of PNS
relay nerve impulses to CNS and back again
what do peripheral nerves sense
they sense the world around us
how many pairs of cranial nerves are in somatic nervous system
12
where do cranial nerves emerge from within somatic nervous system
underside of brain
how many spinal nerves make up the somatic nervous system
31 pairs
what are the 2 types of nerves that make up somatic nervous system
cranial nerves
spinal nerves
what is the somatic nervous system involved in
involved in reflex actions which allows reflexes to occur quickly
what are sensory neurons
they are neurons which relay messages to CNS
what are motor neurons
neurons which relay info from CNS to other areas of body
what is the role of sympathetic nervous system
response to emergencies (fight or flight)
what happens to neurons within body when sympathetic nervous system is being used
neurons from SNS travel to every organ and gland preparing body for rapid action when under threat
