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Body Fluids and Circulation

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Advanced Zoology

Animal Kingdom
Structural Organisation in Animals
Digestion and Absorption
Breathing and Exchange of Gases
Body Fluids and Circulation
Excretory Products and their Elimination
Locomotion and Movement
Neural Control and Coordination
Chemical Coordination and Integration
Human Reproduction
Human Health and Disease
Biotechnology Principles and Processes
Biomolecules (Zoology)
Evolution (Zoology)
Biotechnology and its Applications
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  1. Impulse of heart beat originates from
    1. S. A. node
    2. A. V. node
    3. Vagus nerve
    4. Cardiac nerve
Correct Option: A

SA node is called the pacemaker because it initiates the cardiac impulse. AV node receives the impulse from the SA node and transmits it to the ventricles


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