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प्रश्न
Differentiate between:
Diastole and Systole.
उत्तर
| Diastole | Systole |
| It is the condition of the heart when the chambers relax. | It is the condition of the heart when the chambers of the heart contract. |
| It is the condition when the blood enters the chamber, e,g., when left atrium relaxes, blood enters from the pulmonary vein under low pressure. | It is the condition when the blood is pumped out of the heart, e.g., when the left ventricle contracts, the blood is pumped to the body under high pressure. |
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संबंधित प्रश्न
Name of the valve between the left atrium and left ventricle and give its significance.
Where does blood absorb oxygen?
Describe in brief die cardiac cycle.
The figure below represents the internal structure of a mammalian heart and the associated blood vessels.
(i) (a) Name each of the structures labeled 1, 2, 3, 4, 5, 6, 7 and 8.
(b) State the function of each of the structures 5, 6, 7, and 8.
(ii) (a) State the function of the heart as an entire organ.
(b) Why are the walls of the left ventricle more muscular than the right?
Give Technical Term for the following:
The phase of cardiac cycle in which the auricles contract
Which of the following has thickest wall?
How do the pulmonary artery and pulmonary vein differ in their function when compared to a normal artery and vein?
Match the items given in Column I (Valves) with those in Column II (Location) and select the correct option.
| Column I | Column II | ||
| i. | Tricuspid valve | a. | Between left atrium and left ventricle |
| ii. | Bicuspid valve | b. | Between right ventricle . and pulmonary artery. |
| iii. | Semilunar valve | c. | Between right atrium and right ventricle |
Assertion: Human heart does not allow the mixing of oxygen to reach blood with carbon dioxide to reach the blood.
Reason: Human heart has different chambers.
The QRS complex in a standard ECG represents ______.
