biopsychology Flashcards
(31 cards)
parts of the central nervous system
brain
spinal cord
peripheral nervous system
somatic
automatic - parasympathetic & sympathetic
what does the brain do
all conscious awareness
what does spinal cord do
passes messages to/from the brain and connects nerves to the PNS
responsible for reflex actions
what does the somatic nervous system do
controls voluntary movements and receives information from sensory receptors
what does the automatic nervous system do
involuntary vital functions
what is the automatic nervous system divided into
parasympathetic & sympathetic
what is sympathetic responsible for
fight or flight
what is the parasympathetic responsible for
rest and digest
what does the endocrine system do
controls vital functions in the body
what do glands do
secrete hormones which are then transported in the blood
what does the pituitary gland do
located in the brain and controls the release of hormones from all other glands in the body
what does thyroxine gland do
produce from the thyroid gland
affects cells in heart and metabolism which impacts growth rates
what is the order of fight or flight process
hypothalamus»_space; pituitary gland»_space; sympathetic nervous system»_space; adrenal medulla»_space; adrenaline + noradrenaline
what does hypothalamus do
detects threat. maintains stability
what does the sympathetic nervous system do in fight or flight
stimulates release of adrenaline
what does the adrenal medulla do
release adrenaline
what happens when in fight or flight
increased heart rate
sweating
nausea
blood vessels dialate
3 types of neurons
sensory
relay
motor
what do motor neurons do
-controls muscle movements
-when stimulated, they release neurotransmitters that bind to the receptors on muscles to trigger a response, leading
what do relay neurons do
allow sensory and motor neurons to communicate
what does the sensory neuron do
carry’s messages from the PNS to the CNS
- carry nerve impulses to the spinal cord and brain
- at the brain, they are translated into sensations
localisation
the idea that specific parts of the brain have specific functions
frontal lobe
motor area
controls voluntary movement
