biopsych - systems

Question 1

nervous system

Answer 1

consists of central nervous system and peripheral nervous system

Question 2

central nervous system

Answer 2

consists of the spinal cord and brain, origin of all complex commands and decisions

Question 3

peripheral system

Answer 3

sends info to CNS from the outside world, transmits messages from the CNS that directs muscles to act

Question 4

somatic nervous system

Answer 4

transmits info from receptors in the sense organs to the CNS, directs muscles to act

Question 5

autonomic nervous system

Answer 5

acts involuntarily, two main divisions sympathetic and parasympathetic

Question 6

fight or flight pathway

Answer 6

•person enters stressful situation
•hypothalamus receives distress signal
•hypothalamus activates SAM
•the SNS stimulates the adrenaline medulla
•adrenaline medulla secretes adrenaline and noradrenaline into bloodstream
•once threat has passed parasympathetic system turns the body to resting state

Question 7

sensory neurone

Answer 7

short axons/long dendrites
from the senses towards the brain

Question 8

relay neuron

Answer 8

short axons/short dendrites
to and from the brain

Question 9

motor neuron

Answer 9

long axons/long dendrites
from the brain to muscles