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Atrioventricular node is natural pacemak...

Atrioventricular node is natural pacemaker of heart.

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To determine whether the statement "Atrioventricular node is the natural pacemaker of the heart" is true or false, we can follow these steps: ### Step-by-Step Solution: 1. **Understand the Role of the Sinoatrial Node (SA Node)**: - The SA node is known as the natural pacemaker of the heart. It is located in the right atrium and is responsible for initiating the electrical impulses that trigger heartbeats. 2. **Function of the SA Node**: ...
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Knowledge Check

  • Pacemaker of heart is

    A
    AV node
    B
    SA node
    C
    SV node
    D
    tricuspid valve

  • Consider the following four statement (i) - (iv) and select the correct option. (i) SA node is natural pacemaker of heart (ii) Human heart has inter-auricular foramen (iii) Right atrioventricular valve is a semilunar value (iv) Normal systolic and diastolic pressure of human is 120 and 60 mm Hg respectively.

    A
    `{:("(i) (ii) (iii) (iv)"),("F F T F"):}`
    B
    `{:("(i) (ii) (iii) (iv)"),("F F T T"):}`
    C
    `{:("(i) (ii) (iii) (iv)"),("T T F T"):}`
    D
    `{:("(i) (ii) (iii) (iv)"),("T F F F"):}`

  • SA node is called the pacemaker of the heart because

    A
    it conducts the impulse from AV node
    B
    it initiates the cardiac impulse
    C
    it is present in the right atrium
    D
    it is made up of specialised muscle fibres.

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    Assertion: SA node malfunctioning leads to disturbance of Heart rate Reason: SA node is the pacemaker of heart producing electrical impulse for heart contraction

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