Biology·Organisation & maintenance · NSSCO 3.13.1
Nervous control & the eye
Narrated lesson · press play
Your body's high-speed messaging system — the three types of neurone, how impulses jump a synapse, the reflex arc that protects you, and how your eye adjusts to light.
What you'll learn in this lesson
By the end you should be able to (NSSCO Biology 3.13.1):
- Identify sensory, relay and motor neurones; describe effectors (muscles and glands)
- Define a synapse and describe how impulses cross it
- Define a reflex action and describe a simple reflex arc
- Describe the eye and explain the pupil reflex
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Miss Rachel and Mike talk through the whole topic — with the figure and working drawn live.