the divisions of the nervous system

Question 1

what is the human nervous system

Answer 1

body wide system of nerve cells that collect information from the world, process it and take action by directing body organs and muscles via transmission of electro chemical messages

Question 2

CNS

Answer 2

central nervous system
involves complex processing including the brain from conscious and unconscious processing and the spinal cord which receives and transmits information and reflex processing

Question 3

PNS

Answer 3

peripheral nervous system
body wide net repel of message neurons
sensory (afferent) neurons take info to the cns and motor (efferent) neurons take info away from the cns

Question 4

ANS

Answer 4

automatic nervous system
part of the pns that controls actions and internal glands
involuntary

Question 5

somatic nervous system

Answer 5

part of pns that contorts skeletal muscles
voluntary

Question 6

sympathetic system

Answer 6

part of the ans
increases bodily activities
release of noradrenaline activates in fight/flight response
increase heart/sweat/breathing rate/dilate pupils

Question 7

parasympathetic system

Answer 7

part of ans
decrease bodily activities releases acetylcholine
activities in rest
decreased heart/sweat/breathing/constricts pupils

Question 8

homeostasis

Answer 8

maintained
this means our internal environment is regulated which is a balance between sympathetic and parasympathetic systems