Which of the following statements regarding the human heart is incorrect?
During a joint diastole, all four chambers of the heart are in a relaxed state.
The stroke volume multiplied by the heart rate gives the cardiac output.
The second heart sound (dub) is associated with the opening of the semilunar valves.
Each ventricle pumps out approximately 70 mL of blood during a cardiac cycle.
This is incorrect because the second heart sound (dub) is actually associated with the closure of the semilunar valves at the beginning of ventricular diastole. Heart sounds are always produced by the closing of valves, not the opening.
Cardiac activities of the heart are regulated by:A. Nodal tissueB. A special neu
NextWhich of the following is responsible for the lub sound of the heart?
Cardiac activities of the heart are regulated by:A. Nodal tissueB. A special neural centre in the me
MediumThe given figure shows the schematic plan of blood circulation in humans with labels A to D. identif
MediumIn the given figure of the heart, which f the marked structures (1, 2, 3, 4, 5) carry oxygenated blo
MediumIdentify the given figure and select the correct option.
MediumCongestion of the lungs is one of the main symptoms in:
MediumSudden damage of heart muscle due to inadequate blood supply is called:
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