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प्रश्न
What is meant by human circulatory system? Name the organs of the circulatory system in humans.
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उत्तर
The organ system that is responsible for the transport of materials inside the human body is known as the human circulatory system. In human beings, the organs of the circulatory system are the heart, arteries, veins, and capillaries.
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संबंधित प्रश्न
Explain with tile help of a chart, explain the compatibility of human blood groups.
Explain ABO blood group system in human being with a suitable chart.
The blood from the heart is transported to all parts of the body by the ______.
Blood in the pulmonary artery or pulmonary vein (Which one contains less oxyhaemoglobin ?)
Given below is a diagram of a human blood smear.
Study the diagram and answer the questions that follow:
a) Name the components numbered ‘1’ to ‘4’
b) Mention two structural differences between the parts ‘1’ and ‘2’.
c) Name the soluble protein found in part ‘4’ which forms insoluble threads during clotting of blood.
d) What is the average lifespan of the component numbered ‘1’ ?
e) Component numbered ‘1’ do not have certain organelles but are very efficient in their function. Explain
Agranulocytes are :
Name the following:
The artery which carries deoxygenated blood.
Give reason for the following:
Only the veins and not the arteries are provided with valves.
Explain the following:
Why is the closed circulatory system more efficient than the open system?
During surgical operations or during accidents, the patient may be given blood from outside to save his life. What is the technical name of this process? Briefly explain the precautions to be taken in this process.
Multiple choice questions. Tick ( ✓ ) the correct choice:
The four blood groups in humans are
True or false:
People with blood group ‘O’ are called universal recipients
Draw the structure of human heart and label its parts
Write a short note on the human heart.
Differentiate between:
Open circulatory system and Closed circulatory system.
Complete the following sentence with appropriate word:
Beside food, oxygen and waste materials, circulatory system transports ________ to various parts of the body.
Match the following.
| Group A | Group B |
| (1) Lungs | (a) Circulation |
| (2) Stomach | (b) Respiration |
| (3) Heart | (c) Co-ordination |
| (4) Brain | (d) Digestion |
Which of the following is/are required for the production of RBCs?
Agranulocytes are about ______ % of total WBCs.
______ refers to a marked decrease in the number of platelets.
