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प्रश्न
Write three types of blood vessels. Give one important feature of each.
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उत्तर
Three main types of blood vessels that are found in the human body are arteries, veins, and capillaries.
Arteries carry blood from the heart to different body parts. Veins bring blood from different body parts to the heart. Valves are present in veins to prevent the backward flow of blood. Both arteries and veins divide in the organs to form arterioles and venules respectively. The arterioles sub-divide to form thin-walled capillaries which join to form venules. Venules join to form veins. The nutrients, hormones, gases can diffuse into the tissue cells through the walls of the capillaries and vice versa. Thus, arteries, arterioles, veins, venules, and capillaries are blood vessels.
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संबंधित प्रश्न
Write one structural difference between the composition of arteries and veins.
Name the largest artery
You can see some blood vessels on the outside of the hands specially in older people. Are those veins or arteries ? How can you confirm your answer ?
Name the instruments used for measuring pulse.
What is blood pressure? When does it rise?
Describe the structural differences between an artery and a vein.
Given below is a diagrammatic representation of certain types of blood vessels in human body.
Where can such an arrangement be found as an example - in lungs or in heart walls?
Name the blood vessels entering the heart and leaving the heart.
Complete the following sentence with appropriate word:
__________ are the blood vessels which usually carry oxygenated blood.
Identify the CORRECT match.
