Reflex Arc

Question 1

step 1

Answer 1

The receptor; which receives the initial stimulus (loud noise or pinprick to skin)

Question 2

step 2

Answer 2

The sensory (or afferent) nerve; which carries the impulse to the spinal column/brain.

Question 3

step 3

Answer 3

The intermediate nerve fibre (interneuron); which interprets the signal & issues an appropriate response.

Question 4

step 4

Answer 4

The motor (or efferent) nerve; which then carries the response message from the spinal cord - muscles / organs.

Question 5

step 5

Answer 5

The effective organ itself; which carries out the response