CAIE IGCSE Biology 14.1.5 The Simple Reflex Arc
Practise describing and interpreting the complete pathway from a detected stimulus to a rapid effector response.
- Syllabus
- 2026–2028
- Course
- Biology 0610
Exam points
- sequence receptor -> sensory neurone -> relay neurone -> motor neurone -> effector
- identify each neurone from its position and the direction of impulses in a reflex diagram
- distinguish the receptor detecting a stimulus from the effector muscle or gland responding
14.1.5—Simple reflex arc in terms question 1
The nervous system coordinates the responses of animals to changes in their environment.
Fig. 2.2 is a flow chart that shows how an involuntary action is controlled.
Fig. 2.2
State the structure found at X.
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