nervous system

Question 1

what is the nervous system and what does it consist of?

Answer 1

specialist network of cells, central nervous system (CNS) and peripheral nervous system (PNS)

Question 2

what is the CNS made up of?

Answer 2

Made up of the brain – the centre of all awareness – and the spinal cord.

Question 3

what does the PNS do?

Answer 3

Transmits messages, via millions of neurons, to and from the CNS.

Question 4

what are the 2 subdivisions of the PNS?

Answer 4

somatic nervous system (SNS), autonomic nervous system (ANS)

Question 5

what is the somatic nervous system?

Answer 5

Controls muscle movement and receives information from sensory receptors. voluntary actions

Question 6

what is the autonomic nervous system?

Answer 6

Controls vital functions e.g. breathing, heart rate, digestion, stress.
involuntarty actions

Question 7

what is the autonomic nervous system further divided into?

Answer 7

sympathetic nervous system, parasympathetic nervous system.

Question 8

what does the sympathetic NS control?

Answer 8

Fight or Flight mechanism, increases heart rate and adrenaline

Question 9

what does the parasympathetic NS control?

Answer 9

rest and digest mechanism