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Tissues Test - 73

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Tissues Test - 73
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Weekly Quiz Competition
  • Question 1
    1 / -0
    Ruptured blood cells are not trapped in
    Solution
    The blood cells are produced in bone marrow. In case if RBC is ruptured due to wear and tear effect they are trapped in blood or they get disintegrated in liver or spleen (graveyard of RBC). Hence ruptured blood cells are not trapped in bone marrow.
    So, the correct answer is 'Bone marrow'.
  • Question 2
    1 / -0
    Which of the following is multinucleated?
    Solution
    A. Skeleton muscles
    EXPLANATION: Most important example of syncytium is skeleton muscles. Syncytium is a single cell, which contains multiple nuclei. Skeletal muscle fibres are cylindrical, unbranched and multinucleated.
  • Question 3
    1 / -0
    Choose the odd pair.
    Solution
    The correct option is D.
    Neuron is related to the nervous system and Melanin is the pigment responsible for skin pigmentation. 
  • Question 4
    1 / -0
    Which are the characteristics of skeletal muscles?
    Solution
    D. Cylindrical, syncytial and unbranched
    EXPLANATION:  A striated skeletal muscle is cylindrical, syncytial and unbranched. If a multinucleated mass of cytoplasm is not separated into individual cells, that type of cells are called as syncytial cells.  
  • Question 5
    1 / -0
    Match the animals listed in column I to blood listed in column II.
    Column IColumn II
    aManpPlasma and cells colourless
    bEarthwormqPlasma colourless and nucleated RBC
    cCockroachrPlasma colourless and enucleated RBC
    dFrogsPlasma red and nucleated colourless RBC
    tPlasma and RBC have haemoglobin
    Solution

    [A] In man, about 55% of blood is blood plasma, a fluid that is the blood's liquid medium, which by itself is colourless and has enucleated RBC. So, a matches r.

    [B] In earthworm, blood is reddish in colour. It is formed of plasma and corpuscles. The corpuscles are amoeboid, colourless and the RBCs are nucleated. The plasma contains a red pigment called haemoglobin. So, b matches s.

    [C] Cockroaches have white blood because cockroaches lack haemoglobin in their blood. So, c matches p.

    [D] Frog blood is similar to human blood in its basic structure. Like human blood, frog blood is mainly made of the liquid plasma matrix and red blood cells. Plasma is colourless with nucleated RBC  and no platelets. So, e matches q.

    Thus, the correct answer is A.

  • Question 6
    1 / -0
    Fibroblasts, macrophages and mast cells are present in _______________.
    Solution

    Areolar tissue is the type of connective tissue. These are made of cells and extracellular matrix. The matrix has two components which are fibres and ground substance. It consists of the various cells - fibroblast which secretes collagen. Macrophages help in phagocytosis and mast cells which help in the allergic and inflammatory response. These are absent in adipose tissues, glandular, and compound epithelium.

    Therefore, the correct answer is option B.

  • Question 7
    1 / -0
    Which is not a cellular element of blood?
    Solution
    Plasma is not a cellular element of blood. It is a liquid component in which the blood cells are suspended. Plasma is more than half of the blood's volume having a major portion as water and some portion as dissolved solids.
    Hence, the correct option is C.
  • Question 8
    1 / -0
    The area where myelin sheath is absent in the nerve fibre is:
    Solution

    The periodic gap in the insulating sheath (myelin) on the axon of certain neurons serves to facilitate the rapid conduction of nerve impulses is known as node Ranvier.
    So, the correct answer is 'Node of Ranvier'.

  • Question 9
    1 / -0
    Epimysium, perimysium and endomysium occur in ______________.
    Solution

    Striated muscles are the voluntary muscles which have overlapping contractile myofilaments. These are made up of a contractile protein known as actin and myosin.

    The connective tissue which wraps the whole muscle is termed as epimysium. It is a fibrous elastic type of tissue.

    Perimysium is the connective tissue that wraps bundles of muscle fibres.

    Endomysium is the layer of areolar connective tissue. It ensheaths each individual muscle fibre. It also contains capillaries, nerves, and lymphatics.

    So, the correct option is B.


  • Question 10
    1 / -0
    Which part of the neuron is covered by a fatty sheath?
    Solution
    The Myelin Sheath of a neuron consists of fat-containing cells that insulate the axon from electrical activity. This insulation helps to increase the rate of transmission of signals. A gap exists between each myelin sheath cell along the axon called Node of Ranvier. 
    So, the correct option is A.

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