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प्रश्न
The diagram below represents the human heart in one phase of its function. Study the diagram carefully and answer the questions that follow:
(i) Name the phase.
(ii) Which part of the heart is contracting in this phase? Give a reason to support your answer.
(iii) Name the parts labelled 1 to 4.
(iv) What type of blood flows through ‘2’?
(v) State the function of the part numbered ‘5’.
(vi) Name the membrane that covers the heart.
उत्तर
(i) Ventricular systole
(ii) Ventricles are contracting in this phase. In the diagram given, tricuspid valves and bicuspid valves are closed, while the semi-lunar valves are open.
(iii)
1 – Pulmonary artery
2 – Aorta
3 – Bicuspid valve
4 – Semilunar valve (aortic semilunar valve)
(iv) Oxygenated blood flows through ‘2’, i.e. aorta.
(v) ‘5’ is pulmonary semilunar valve. It prevents the backflow of blood into the right ventricle at the time of ventricular diastole.
(vi) Pericardium covers the heart.
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संबंधित प्रश्न
Mention the exact location of the Pulmonary semilunar valve
Name the following:
The smallest common blood vessels formed by the union of capillaries.
When are the sounds "LUBB" and "DUP" produced respectively during heart beat?
Find out my partner.
| Group 'A' | Group 'B' |
| 1. Heart beats | a. 350 ml |
| 2. RBC | b. 7.4 |
| 3. WBC | c. 37∘C |
| 4. Blood donation | d. 72 |
| 5. Normal body Temperature | e. 50-60 lakh/mm3 |
| 6. pH of oxygenated blood | f. 5000-6000 per mm3 |
Explain with reasons.
Human blood is red coloured.
Define the Circulatory system.
Name the Following
Oxygen is transported by the blood in the form of
Choose the correct alternative.
What is the minimum number of the plasma membrane that oxygen has to diffuse across to pass from air in the alveolus to haemoglobin inside a RBC?
Which of the following is/are required for the production of RBCs?
Circulation is carried out by ______ in higher animals.
