Simple Reflexes

Simple Reflexes

Defined as a rapid automatic response to a stimulus

• Response is always the same for the same stimulus
• Provides the fastest route from receptor to effector
• Has a protective effect to avoid harm and protect tissue damage
• No conscious control as the brain is not involved, so is not learned

• Examples of reflexes -
  • withdrawal reflex (hand away from hot surface)
  • stretch feflex
  • coughing/sneezing/blinking
  • prevention of tendons and muscles overstretching

Organisation of the Nervous System and Reflex Arcs:

The nervous system has two main divisions: the central nervous system (CNS), comprising of the brain and spinal…