b5- homeostasis and response

• Name the two types of effectors and state what they do.

  the two types of effectors are muscle and glands . Muscles contract when stimulated, whilst glands release hormones. 
• What is the role of a receptor?

  to detect stimulus
• What is the role of a sensory neurone?

  To transfer a signal from a receptor to the CNS
• What is the role of a motor neurone?

  To transfer a signal from the CNS to an effector
• What is the role of a relay neurone?

  To  transfer a signal from a sensory neurone to a motor neurone
• What is a reflex?

  it is An automatic response to a stimulus
• what is the pathway of a reflex arc

  stimulus ➔ receptor ➔ sensory neurone ➔ relay neurone ➔ motor neurone ➔ effector ➔ response