the structure and function of the nervous system

Question 1

what does the CNS (central nervous system) do

Answer 1

Collects and responds to information in the environment.
Controls working of different organs and cells including the brain.

Question 2

what are all the subdivisions of the nervous system

Answer 2

CNS (central nervous system) + PNS (peripheral nervous system)
CNS = brain and spinal cord
PNS (Peripheral nervous system) = ANS (Autonomic nervosu system) + SNS (sematic nervous system)
ANS = sympathetic division and parasympathetic division

Question 3

what does the PNS do

Answer 3

Receives messages from the CNS and sends messages to it.
Messages sent via neurons.

Question 4

What does the ANS do

Answer 4

Governs automatic (involuntary) functions.
For example, breathing, heart rate, digestion and the body’s response to stress.

Question 5

what does the SNS do

Answer 5

Sends information from the brain to muscles, voluntary control of our muscles plus reflex responses.
Takes in information from sensory organs, such as the eyes and the skin.