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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
Reproductive Health
  1. ‘Dup’ sound is produced during closure of
    1. Semilunar valves
    2. Bicuspid valve
    3. Tricuspid valve
    4. Both b and c
Correct Option: A

Heart produces two types of sounds. 1st sound: ‘Lubb’ is produced by closure of bicuspid and tricuspid valves. 2nd sound: ‘Dup’ is produced by closure of semilunar valves present at the base of aorta to avoid back flow of blood into the ventricle.


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