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Heart sound which is longer is
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Answer: ASolution: The first heart sound (lub) is caused by sudden closure of bicuspid and tricuspid valves and is longer than the second heart sound (dup) which is caused by closure of semilunar valves.
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Question 3
The rate of heartbeat is regulated by the integrated activity of inhibiting and accelerating effects occuring in which part of the brain ?Question 4
Read the following statements carefully (i) In fishes, the heart pumps out deoxygenated blood which is oxygenated by the gills and supplied to the body part from where deoxygenated blood is returned to the heart
(ii) The openings of the right and the left ventricles into pulmonary artery and aorta respectively are provided with the mitral valves
(iii) The nodal musculature has the ability to generate action potential without any external stimuli, i,e., it is autoexcitable
(iv) The T-wave of ECG represent depolarisation of the ventricles.
Which of the above two statements are incorrect ?
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| Question Text | Heart sound which is longer is |
| Answer Type | Text solution:1 |
| Upvotes | 150 |
