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प्रश्न
Mention the phase of heart beat in which both the atrio-ventricular valves are closed.
एका वाक्यात उत्तर
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उत्तर
Ventricular systole.
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पाठ 8: The Circulatory System - Progress Check [पृष्ठ १०९]
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संबंधित प्रश्न
Describe the circulatory system of humans.
Agranulocytes are :
Match the items in Column ‘A’ with those in column ‘B’ Rewrite the correct matching pairs.
| Column A | Column B | ||
| (a) | SA Node | (i) | Plasma |
| (b) | Defective haemoglobin in RBC | (ii) | Serum |
| (c) | Muscle fibres located in heart | (iii) | Pacemaker |
| (d) | The liquid squeezed out of blood during clotting | (iv) | Sickle cell anaemia |
| (e) | Never tires, keep on contracting and relaxing | (v) | Purkinje fibres |
| (f) | Cardiac cycle | (vi) | Cardiac muscle |
| (g) | Liquid part of the blood without corpuscles | (vii) | 0·85 sec |
Put a tick mark (✓) against the correct alternative in the following statement.
Pulmonary vein carries
Define the Circulatory system.
State the Location:
Tonsils
Long answer question:
Describe human blood and give its functions.
Describe how the exchange of oxygen and carbon dioxide gases takes place in the lungs.
Which of the following is/are required for the production of RBCs?
Name the following:
The structure that holds the heart valves in position.
