Neurones

Question 1

What is a neurone?

Answer 1

A specialised cells designated to transmit information to other neurones, glands and cells.
—> They transmit information electrically and chemically
- There are over 100 Billions neurones in a person and 80% are present in the brain

Question 2

Why are the 3 types of neurones?

Answer 2

Sensory neurones
Motor neurones
Relay neurones

Question 3

Sensory Neurones

Answer 3

• Carry messages from the PNS to the CNS
  —> pseudo unipolar
  —> takes in information from the environment (five senses)

Question 4

Relay Neurones

Answer 4

• Connect the sensory neurones to the motor neurones
  —> make up 97% of neurones in the brain
  —> helps complete complex functions like decision-making

Question 5

Motor Neurones

Answer 5

• connects the CNS to effectors such as muscles and glands
  —> releases neurotransmitters to trigger responses leading to muscle movement
  —> upper and lower motor neurones