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Tissues Test - 40

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Tissues Test - 40
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Weekly Quiz Competition
  • Question 1
    1 / -0
    Which blood cells transport oxygen?
    Solution
    Erythrocytes or red blood cells (RBC) are the most abundant of all the cells in blood. A healthy adult man has, on an average, 5 millions to 5.5 millions of RBCs per cubic mm of blood. RBCs are formed in the red bone marrow in the adults. RBCs are devoid of nucleus in most of the mammals and are biconcave in shape. They have a red coloured, iron containing complex protein called haemoglobin, hence the colour and name of these cells. These molecules play a significant role in transport of respiratory gases like oxygen and carbon dioxide.
    Hence the correct option is A.
  • Question 2
    1 / -0
    Erythropoiesis may be stimulated by the deficiency of
    Solution
    Erythropoiesis is the process whereby erythroid precursor cells proliferate and differentiate into RBCs. It is stimulated by the decrease in the level of oxygen in the blood, that is detected by the kidneys, which then secrete the hormone erythropoietin. Erythropoietin stimulates proliferation and differentiation of red cell precursors, which activates increased erythropoiesis in the haemopoietic tissues like bone marrow
    So, the correct answer is 'Oxygen'
  • Question 3
    1 / -0
    Which set identifies skeletal muscles?
    Solution

    • Smooth muscle tissue cells: they are involuntarily controlled, spindle-shaped, not striated, not branched, and uninucleated.
    • Cardiac muscle tissue cells: they are involuntary and intrinsically controlled, striated, branched, and single nucleated. 
    • Skeletal muscle tissue cells: they are voluntary, cylindrical in shape, striated, unbranched, and multinucleated.

    Therefore, option A is correct.  

  • Question 4
    1 / -0
    Striated muscle fibres possess
    Solution
    Striated muscle fibres appear to have transverse strips when viewed under the microscope. This is because they show alternative transverse light and dark bands. Most striated muscles are attached to bones by tendons. They are also called skeletal muscles.

  • Question 5
    1 / -0
    Cardiac muscle cells are ______________________.
    Solution
    Cardiac muscle cells are found in the walls of the heart. They are uninucleate as each cell has a single nucleus. Also, these cells are not controlled by will and hence said to be involuntary. 
    So the correct answer is option B. 

  • Question 6
    1 / -0
    Striated muscles______________.
    Solution
    • Striated muscle gets tired after strenuous exercise because creatine phosphate stores are exhausted. 
    • During the normal process, creatine phosphate is converted to creatine and phosphate is released to make one ATP from ADP. 
    • But when creatine stores are exhausted after strenuous exercise, then glucose undergoes glycolysis to form pyruvic acid, which is then converted to lactic acid, which gives rise to ATP, and muscle need is fulfilled. 
    • But eventually lactic acid builds up in muscle and pH drops and muscle gets fatigued.
    • Striated muscles are voluntary and cylindrical in shape.

    Therefore, option B is correct.  
  • Question 7
    1 / -0
    Striations appear in skeletal muscles due to ________.
    Solution
    Skeletal muscles and cardiac muscles are called striated muscles due to the presence of alternate dark and light bands. When stained, this arrangement is visible as light and dark bands under the microscope. Hence, striations appear on striped muscles. Therefore, option A is correct.  
  • Question 8
    1 / -0
    Squamous epithelium is found in________________.
    Solution
    Squamous epithelial cells are thin, flat cells. Simple squamous epithelium is a single layer of squamous cells, which form a thin, delicate lining. Such lining is generally utilized where the transportation of substances takes place through selective permeability. 
    The trachea is a windpipe, which connects larynx and pharynx to the lungs. Trachea carries the wind to the lungs. So, the trachea need not be having the selectively permeable lining. 
    The intestine is the place where absorption of nutrients takes place. For this function, tall columnar cellular lining is utilized. 
    Oviduct carries out the function of pushing the fertilized ovum or zygote towards the uterus. For this purpose, the inner surface of the oviduct is lined by ciliated epithelium, which moves and pushes the zygote. 
    Lung alveoli perform the function of gaseous exchange. For this purpose, alveoli has a selectively permeable lining of simple squamous epithelial cells. So, the correct option is A.
  • Question 9
    1 / -0
    Haversian canal occurs in_______________.
    Solution
    Haversian canals can be defined as a series of tubes around narrow channels formed by lamellae. They are seen in compact bones and are absent in cartilage, internal ear and liver.
    Hence the correct option is B.

  • Question 10
    1 / -0
    Which of the following helps in repair of tissue and fills up the space inside the organ?
    Solution
    Areolar tissue is a connective tissue found in between skin and muscles, around blood vessels, nerves, and the bone marrow. It fills the space inside the organ, supports the internal organ, and helps in tissue repair.
    Tendon is a tough fibrous connective tissue that connects muscle to bone.
    Adipose tissue is fat-storing tissue that is present in between the skin and internal organs.  
    Cartilage has widely spaced cells and is interspersed in a matrix made of proteins and sugars. It covers the ends of bones at a joint. 
    So, the correct answer is option C.
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