nervous system

Question 1

what is cns

Answer 1

brain + spinal chord

Question 2

cns explanation (b)

Answer 2

-brain = centre of all
conscious awareness
-humans have a higher developed cerebral cortex (3mm) = higher mental functions
-split into 2 hemispheres

Question 3

cns explanation (s)

Answer 3

-spinal chord transmits messages to and from brain via millions of neurons

Question 4

ans

Answer 4

autonomic nervous system- vital functions in the human body e.g heartbeat, breathing, digestion

Question 5

sns

Answer 5

somatic nervous system- muscle movement + receives info from sensory receptors