b1d-f

b1d-f

1. We detect things around us using our sense organs, e.g. our eyes detect light.
2. Vision in one eye is monocular vision – it provides a wider field of view but poor judgement of distances.
3. Vision in two eyes is binocular vision – it provides a narrower field of view but better judgement of distances.
4. The light sensitive receptors of the eye are found in the retina.
5. Accommodation refers to the process of the eye focusing on near and distant objects.
6. A reflex action is a fast, automatic response to a stimulus.
7. Information is carried round the nervous system as electrical impulses.
8. A synapse is the space between two neurones.
1. Drugs can be grouped as depressants, hallucinogens, painkillers, performance enhancers or stimulants.
2. A drug is a substance which changes the chemical processes within the body.
3. Nicotine is the addictive drug in tobacco smoke.
4. Nicotine is a stimulant speeding up the heart rate and causes narrowing of blood vessels.
5. Carbon monoxide in tobacco smoke stops red blood cells carrying oxygen.

Resource summary

	Created by imy saunders about 11 years ago