write a short note on blood vessels
Answers
QUESTION⬇️
write a short note on blood vessels
ANSWER⬇️
The blood in our body moves through tube like structure called blood vessels. blood vessels are of three types they are
- arteries
- veins
- capillaries
Arteries:-
Arteries transport blood from the heart to the organs.They generally carry oxygenated blood except the pulmonary artery,which carries deoxygenated blood from the heart to the lungs.
Veins:-
Veins bring blood to the heart from all the parts of the body. the generally carry deoxygenated blood except the pulmonary vein,which braings oxygenated blood from the lungs to the heart.
Capillaries:-
When an artery reaches an organ it splits into smaller vessels called arterioles which further split to form a network of extremely thin blood vessels called capillaries.The capillaries join together to form larger vessels which ultimately join to form the veins
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Answer:
Blood vessels flow blood throughout the body. Arteries transport blood away from the heart. Veins return blood back toward the heart. Capillaries surround body cells and tissues to deliver and absorb oxygen, nutrients, and other substances.
The left ventricle of the heart pumps oxygenated blood into the aorta. From there, blood passes through major arteries, which branch into muscular arteries and then microscopic arterioles.
After the capillaries release oxygen and other substances from blood into body tissues, they feed the blood back toward the veins. First the blood enters microscopic vein branches called venules. The venules conduct the blood into the veins, which transport it back to the heart through the venae cavae.
Capillaries are tiny vessels that branch out from arterioles to form networks around body cells. In the lungs, capillaries absorb oxygen from inhaled air into the bloodstream and release carbon dioxide for exhalation. Elsewhere in the body, oxygen and other nutrients diffuse from blood in the capillaries to the tissues they supply. The capillaries absorb carbon dioxide and other waste products from the tissues and then flow the deoxygenated blood into the veins.
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