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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. A vein possesses a large lumen because
    1. tunica media and tunica externa form a single coat
    2. tunica interna and tunica media form a single coat
    3. tunica interna, tunica media and tunica externa are thin
    4. tunica media is a thin coat
Correct Option: D

Veins have larger lumen because the wall of blood vessels is made up of tunica externa, tunica media & tunica interna is thin in veins.


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