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REFLEXES
Actions performed automatically in response to a stimulus without conscious thought or decision are called  reflex actions  or  reflexes. ,[object Object],[object Object],[object Object]
Examples of each of these are:   a. Knee jerk response (simple/spinal cord only)
b. Sneezing – one of the reflex centers in the medulla (involves  brainstem activity only)
c. Hand on a hot stove – a simple reflex pulls the hand away (spinal cord arc only, no brain involvement) followed by a reaction due to an interneuron connection to the brain from the spinal cord.
**optional ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

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Reflexes

  • 2.
  • 3. Examples of each of these are:   a. Knee jerk response (simple/spinal cord only)
  • 4. b. Sneezing – one of the reflex centers in the medulla (involves brainstem activity only)
  • 5. c. Hand on a hot stove – a simple reflex pulls the hand away (spinal cord arc only, no brain involvement) followed by a reaction due to an interneuron connection to the brain from the spinal cord.
  • 6.