the nervous system

Question 1

define the CNS

Answer 1

comprises of the brain and spinal cord and receives messages from the senses and controls the bodies response

Question 2

define the PNS

Answer 2

peripheral nervous system- part f the nervous system outside of the brain and spinal cord

Question 3

what does the PNS comprise of

Answer 3

somatic nervous system and the automatic nervous system

Question 4

define the SNS

Answer 4

part of the PNS responsible for carrying out sensory and motor information to and from the CNS

Question 5

define the ANS

Answer 5

controls the brains involuntary actions such as heart beat and it is self regulating, further dividing into the sympathetic and parasympathetic divisions

Question 6

outline the role of the spinal cord

Answer 6

a bundle of nervous fibres enclosed in a spinal column which connects nearly all parts of the body to the brain

Question 7

outline the role of the brain

Answer 7

part of the CNS that coordinates sensation and intellectual and nervous activity

Question 8

what is the difference between the sympathetic and parasympathetic divisions

Answer 8

1) involved in responses that help us to deal with emergencies such as increasing heart rate or diluting pupils
2) involved in restoring the body back to natural after the emergency has gone such as slowing heart rate or constricting pupils