Sensory Systems and Reflex Arcs

Sensory Systems and Neurons

• Five different sensors exist.
• The sensory system will be examined next week.
• All sensors involve sensory neurons.
• Internal sensory receptors exist for:
  • Stretching
  • Blood pressure
  • Blood chemistry (e.g., glucose levels)

Reflex Arc

• Receptors receive input.
• Receptors send a message to the Central Nervous System (CNS).
• The CNS sends an order.