B5 : Homeostasis and response

• receptors

  
  

  detect stimuli

  many different types
• effectors

  muscles and glands

  respond to nervous impulses
• stimulus

  a change in the environment
• nervous system response

  stimulus

  receptor

  sensory neuron

  central nervous system and relay neuron

  motor neuron

  effector

  response
• synapse

  a junction between 2 neurons as neurons do not touch