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प्रश्न
Explain the following:
Why is the SA node called the pace-maker of the heart?
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उत्तर
The SA is also called the pacemaker because it establishes the basic frequency at which the heart beats. It starts each heart beat and sets the pace for the whole heart.
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संबंधित प्रश्न
What prevents the backflow of blood inside the heart during contraction?
Name any four heart conditions that occur commonly.
Select the odd one in the following:
Tricuspid, Bicuspid, Semilunar, Foramen ovales.
Complete the following sentence with appropriate word:
In man (human), the heart has _____ chambers.
State the Function: Semilunar valves of the heart
Give scientific reason.
Left ventricle is thick than all other chambers of heart.
The normal human heartbeat rate is about ______ time per minute.
A coronary sulcus is found ______
Heart is made up of ______.
Analogy:
Heart: Pericardium membrane.
Lungs: ______.
