Question

What are arteries? Explain it as 5 marks question.

Answer 1

$\Large\mathcal{\fcolorbox{lime}{black}{\red{Answer}}}$

The arteries are the blood vessels that deliver oxygen-rich blood from the heart to the tissues of the body.

Each artery is a muscular tube lined by smooth tissue and has three layers: The intima, the inner layer lined by a smooth tissue called endothelium.

There are three main types of arteries:

Elastic arteries.

Muscular arteries.

Arterioles.

Answer 2

Answer:

1.An artery is a vessel that carries blood away from the heart and toward other tissues and organs. Arteries are part of the circulatory system, which delivers oxygen and nutrients to every cell in the body.

2. There are two arterial divisions within your body: pulmonary and systemic. 'Pulmo' is the Latin root for 'lung.' The pulmonary division, which contains only the pulmonary arteries, is much shorter than the systemic division. The pulmonary arteries carry blood away from your heart and deliver it to your lungs, where the blood becomes oxygenated. This oxygenated blood then returns to your heart through your pulmonary veins.

3. The systemic division contains the aorta and all of its branches. From your heart, oxygenated blood is pushed into your aorta, which is the largest artery in your body. Two smaller arteries - the coronary arteries - immediately branch off the aorta to supply oxygenated blood to the heart itself.

4.As it arches over to travel downward to your abdomen, your aorta gives off branches that carry blood to your head and arms: the brachiocephalic artery, the left common carotid artery and the left subclavian artery.

5. Atherosclerosis, or hardening of the arteries, results from the buildup of cholesterol-containing plaques along the inner walls of your arteries. Atherosclerosis causes gradual narrowing of your arteries, which reduces blood flow and interferes with oxygen delivery to your tissues and organs.

Hope this much is sufficient for 5 marks...