7. Write a note on the different kinds of tubes that carry blood
Answers
Answer:
The Three Major Types of Blood Vessels: Arteries, Veins, and Capillaries. Blood vessels flow blood throughout the body. Arteries transport blood away from the heart. Veins return blood back toward the heart.
Explanation:
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The three major tubes that carry blood are arteries, veins, and capillaries.
1. Arteries- Arteries carry oxygen -rich blood from the heart to all parts of the body. They are elastic, thick-walled and are deeper under the skin. Blood flow through arteries is rapid and under pressure.
2. Veins- Veins are tube-like blood vessels situated just under the skin. These can be easily seen as greenish-blue tubes on your hands and legs. They carry carbon dioxide-rich blood from different parts of the body to the heart. There are valves present in veins that allow blood to flow only in one direction.
3. Capillaries- Capillaries are very thin. They help to connect your arteries and veins in addition to facilitating the exchange of certain elements between your blood and tissues.
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