i can't copy it cause i've got it on paper but the mark scheme wanted
pupils dilate - detailed info about surroundings
heart rate increases and blood flow to muscles increase - ready for action/movemet
endorphins released - protects from pain
breathing rate and depth increase - heightened activity from more O2 and CO2 removal
its all good we still have time anyway
the central nervous system consisted of the brain and spinal cord
the peripheral nervous system carries all impulses to and from the brain, it's divided into the:
somatic nervous system : controls voluntary skeletal muscular movement
autonomic nervous system, control heart rate and non conscious actions the autonomic system is further divided in the the sympathetic and parasympathetic whihc are antagonistic. sympathetic = stress parasympathetic= relax
explain the role of the medulla oblongata