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Body Fluids and Circulations
In cardiac cycle maximum time is taken by
Atria systole
Atria diastole
Ventricle systole
Ventricle diastole
B.
Atria diastole
The cardiac cycle is the event during, which one heartbeat or one cycle of contraction (systole) and relaxation (diastole) of cardiac muscle occurs. A cardiac cycle consists of systole and diastole of atria and systole and diastole of ventricles. The time of cardiac cycle is in reverse ratio of the rate of heartbeat. In man, the heart rate is about 72 times/train, therefore time of a cardiac cycle is 60/72 -0.8 sec approx
| Time Taken | Atria | Ventricle | ||
| Systole | Diastole | Systole | Diastole | |
| 0.1 sec | 0.7 sec | 0.03 sec | 0.5 sec | |
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Describe the evolutionary changes in the pattern of heart among vertebrates.
Why do we call our heart myogenic?
Sino-auricular node is called pacemaker of our heart. Why?
Write the differences between
(d) P wave and T wave
Write the differences between
Systole and diastole
Write the differences between
(a) Blood and lymph
Write the differences between
Open and closed circulatory system
What is the differences between lymph and Blood?
How many times does a heart beat per minute?
What is the function of bicuspid valves?
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