The human eye can form clear images of objects at various distances.
Label structures X, Y, and Z on the diagram of the eye.
Choose from the words in the box below:
[cornea, iris, lens, optic nerve, retina]
- X: ______
- Y: ______
- Z: ______
When a person shifts their gaze to a close-up object, the light rays must be refracted more by the lens. How does the lens change to refract light more?
- By becoming thicker
- By becoming thinner
- By becoming opaque
During accommodation for viewing a close-up object, which two structures interact to allow the lens to change shape?
- Ciliary muscles
- Iris
- Pupil
- Retina
- Suspensory ligaments
Name the specific region at the center of the retina that provides the highest visual acuity (sharpest detailed vision).
A person steps from a dark room into a brightly lit corridor. The sequence below shows the pathway of the reflex action that protects the retina from excessive light:
- Stimulus: High light intensity
- Receptor: ________
- Coordinator: ________
- Effector: ________
- Response: Constriction of the pupil
Complete the sequence by selecting the correct word from the box below for each of the boxes 2, 3, and 4:
[brain, cornea, iris, muscles, retina]
- Receptor (2): ________
- Coordinator (3): ________
- Effector (4): ________
5.2 The human nervous system Questions
Practise AQA GCSE Biology 5.2 The human nervous system with exam-style questions for Foundation and Higher tier. 49 questions covering 5.2.1 Structure and function, 5.2.2 The brain (biology only), 5.2.3 The eye (biology only), and 5.2.4 Control of body temperature (biology only), matched to the AQA GCSE Biology (8461) specification and written in Paper 1 and Paper 2 style. Every question includes a full worked solution and mark scheme, so you can see where marks are awarded rather than just whether you got the answer right.