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प्रश्न
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उत्तर
Circulatory system: It is a system of organs that takes part in the flow of materials in the body of an organism inside an extracellular fluid.
Circulatory system in humans:
(a) The right atrium receives deoxygenated blood from all the parts of the body through large veins called vena cava.
(b) When the right atrium is full of blood, it contracts and the blood is forced into right ventricle.
(c) When the right ventricle is full of blood, it contracts and the blood is pumped into the pulmonary trunk.
(d) From right ventricle, the pulmonary artery carries the blood to the lungs for oxygenation.
(e) The oxygenated blood returns to the heart via pulmonary veins that empty into the left auricle.
(f) When the left auricle contracts, the blood passes into the left ventricle by the opening of bicuspid valve.
(g) On contraction of the left ventricle, the blood is pumped into the artery called aorta.
(h) The aorta branches into vessels which transports blood to the heart and all the body parts.
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संबंधित प्रश्न
What are the average values of blood pressure in a normal adult human?
what is Venule?
Choose the correct answer:
English physician who discovered blood circulation was ___________
Match the following.
| Group A | Group B |
| (1) Lungs | (a) Circulation |
| (2) Stomach | (b) Respiration |
| (3) Heart | (c) Co-ordination |
| (4) Brain | (d) Digestion |
Name the systems that carry out the different functions of the body.
Analogy
Lungs: Respiratory system:: _______: Circulatory system.
Which of the following is/are required for the production of RBCs?
A female has haemophilic brother and parents having nonual blood clotting. She marries a male who has no history of haemophilia in his family. What is the possibility of her children having this disease?
In which of the following process blood neutrophils play an important role?
Given diagram is a schematic representation of the circulatory system in humans. Study the same and answer the questions that follow:
 |
- 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.
