1. State three differnces between arteries and veins. 2. Give three examples of arteries and state their functions.
3. Explain why the walls of the arteries are more muscular and elastic than the walls of the veins.
4. Name four diseases that affect the circulatory system.
5. Give two ways by which one of the diseases mentioned above can be managed.
6. Arrange the following parts of the heart in
order through which blood between the heart
and the heart
Left ventricle, Right ventricle, pulmonary vein,
right atrium, pulmonary artery, left atrium.

Which of the following represents the results of a review of well-controlled studies of vitamin c supplementation on the resistance to, and recovery from, colds? there was a reduction in the duration of colds by 50% on the average. there was a slight effect on reducing the duration and severity of colds for people taking vitamin c supplements. there was a significant reduction in the duration of colds in people who consumed at least one gram a day. there was a significant reduction in the number of colds only in people who consumed > three grams per day.

How does food play a part in our culture (us culture) and other cultures around the world?

Aperson has had a good _ of life if they are still at the age of 95.