The Circulatory System

  • Question
    ICSEENIBI10002935

    The diagrams given below are cross sections of blood vessels:



    i. Identify the blood vessel A B and C 
    ii. Name the parts labelled 1 to 3 
    iii. Name the type of blood that flows through A
    iv. Mention one structural difference A and B
    v. In which of the above vessels does exchange of gases actually take place?

    Solution

    i. The blood vessel are
    A – Artery
    B – Vein
    C – Capillarity

    ii. The parts labelled 1 to 3 are:
    1. Connective tissue layer
    2. Lumen
    3. Muscular layer.

    iii. Name the type of blood that flows through A
    Oxygenated blood


    iv. The difference is:
    A is an artery and has thick muscular walls which are elastic in nature.
    B is a vein which has thin muscular walls which are less elastic in nature.

    v. In C – Capillary

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