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Question
Define the Veins.
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Solution
Veins are the blood vessels that carry deoxygenated (impure) blood from the body cells to the heart.
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closure of tricuspid and bicuspid valves
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closure of atrioventricular and semilunar valves
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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 |
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| 6. pH of oxygenated blood | f. 5000-6000 per mm3 |
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How many litres of blood does an adult human body have?
Match the following.
| Group A | Group B |
| (1) Lungs | (a) Circulation |
| (2) Stomach | (b) Respiration |
| (3) Heart | (c) Co-ordination |
| (4) Brain | (d) Digestion |
In a closed circulatory system, blood is completely enclosed within:
Given diagram is a schematic representation of the circulatory system in humans. Study the same and answer the questions that follow:
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- Label the parts 1 and 4 indicated in the diagram.
- Which of the above mentioned number is the thickest artery? Also write its name.
- Mention the number and chamber of the heart which has the thickest muscular wall.
- Which of the above numbers/structures has the maximum number of blood capillaries?
- Draw neat and labelled diagrams of the transverse section of vena cava and the part numbered as 3. Make sure to show the structural differences between these two in the diagram.
