A-Level Biology OCR B H422

5.2.3: The effect of ageing on the nervous system

#5.2.3a

the symptoms and possible causes of Alzheimer’s disease

To include histological changes in brain tissue, cognitive impairment and behavioural changes, and genetic and environmental causes.

#5.2.3b

(i) the effect of ageing on the nervous

To include hearing impairment, visual impairment (cataracts, glaucoma and macular degeneration) and memory loss and the analysis and interpretation of secondary data from hearing tests and sight tests.

(ii) practical investigations into the effect of ageing on reaction times and memory

PAG11

5.2.2
Monitoring visual function
5.3.1
The principles and importance of homeostasis