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प्रश्न
Explain the main parts of the circulatory system.
उत्तर
- In the circulatory system, Blood is circulated to transport oxygen and nutrients to every part of the body through the circulatory system.
- The circulatory system consists of the
- Heart:
a. The heart is a hollow, muscular organ conical in shape.
b. It is covered by a double walled pericardium membrane, filled with pericardial fluid.
c. This fluid protects the heart from shock.
d. Heart is placed inside the rib cage between the two lungs.
e. Heart has 4 chambers, the two upper chambers called auricles.
f. The two lower thicker chambers called ventricles.
g. The upper and lower chambers of the heart are separated by a muscular wall known as the auriculo-ventricular septum.
h. The right side of the heart receives de-oxygenated blood from various parts of the body and pumped to the lungs for oxygenation.
i. The left side of the heart receives oxygenated blood from the lungs and pumps it to different parts of the body. - Blood:
a. It transports nutrients’ oxygen, wastes, and hormones.
b. It regulates the water level and body
temperature.
c. Blood pumped throughout the body by the heart.
d. It takes oxygen to the tissues and cells from the lungs. - Blood vessels:
Blood vessels consist of arteries and veins. Arteries carry oxygenated blood except for pulmonary arteries which carry deoxygenated blood from the heart vein carries deoxygenated blood except for pulmonary veins carry oxygenated blood to the heart.
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संबंधित प्रश्न
What does the term “double circulation” mean?
Differentiate between members of the following pairs with reference to the aspect asked
within bracket:
Erythrocytes and leucocytes (function)
what is Lymph nodes?
How do you account for the following difference?
The walls of the right ventricle are thicker than those of the right auricle.
Given below is a highly schematic diagram of the human blood circulatory system.
 |
- Which part (state the number) represents the heart? Give reason in support of your answer.
- Which numbers represent the following, respectively?
Aorta Superior vena cava Hepatic portal vein Renal Vein Pulmonary artery Stomach
Name the main artery which carries blood to different parts of the body.
Complete the following sentence with appropriate word:
The membranous covering of the heart is _______.
Mention, if the following statement is True or False. If false rewrite the wrong statement in its correct form:
Leucocytes show amoeboid movement.
State the Location: Spleen
Granulocytes are also known as ____________.
