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Tissues Test - 77

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Tissues Test - 77
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Weekly Quiz Competition
  • Question 1
    1 / -0
    A bone is connected to another bone by:
    Solution
    A ligament is a fibrous connective tissue that attaches bone to bone and usually serves to hold structures together and keep them stable. So, the correct answer is 'Ligament'.
  • Question 2
    1 / -0
    Which is false?
    Solution
    A. RBCs (Red blood cells) are also called erythrocytes.
    B. White blood cells are also called as leucocytes. They play an important role in immunity and body's defence mechanism.
    C. Platelets are also called thrombocytes. They play an important role in clotting of blood.
    D. Haemoglobin is a respiratory pigment which transports oxygen in the body. It combines with oxygen to form oxyhaemoglobin which dissociates to release oxygen in body tissues.
    Hence, statement A is false.
    So, the correct answer is 'RBCs are also called leucocytes'.
  • Question 3
    1 / -0
    Wall of internal organs (stomach, intestine, blood vessels) contains muscles
    Solution
    Smooth muscles are unstriated muscles. The cells of smooth muscles are spindle-shaped, non-striated, involuntary and uninucleated. They are present in the walls of hollow internal organs such as stomach, intestines, urinary bladder, uterus and in the passageways such as blood vessels (arteries and veins).
    So, the correct option is 'Smooth'.
  • Question 4
    1 / -0
    Which of the following is an agranulocyte?
    Solution
    White blood cells or leukocytes can be granular or agranular depending upon the presence or absence of granules in their cytoplasm.
    Granulocytes are granular leukocytes and are of three types:
    • Eosinophils: These cells play important role in immunity and allergic reactions.
    • Basophils: These cells secrete histamine, serotonin and heparin.
    • Neutrophils: These cells perform phagocytosis.
    Agranulocytes are non-granular leukocytes and are of two types:
    • Lymphocytes: These cells produce antibodies.
    • Monocytes: These cells are phagocytic.
    So, the correct answer is 'Lymphocyte'.
  • Question 5
    1 / -0
    In axon of a neuron, the impulse is generated by exchange of
    Solution
    The Sodium ions flow inside and Potassium ions flow outside, causing a reversal of charges. The cell is now depolarised. This depolarization results in an action potential which causes the nerve impulse to move along the length of the axon. This depolarization of the membrane occurs along the entire nerve.
    Hence, the correct answer is (D)
  • Question 6
    1 / -0
    Mark the correct statement.
    Solution
    Correct Answer: (D) Blood has RBC and WBC while lymph has only WBC.
    Explanation:
    • Blood is a connective tissue that acts as a medium of transport of various substances that are needed for maintaining our body's metabolism.
    • The components of blood include RBCs, WBCs, Platelets, and Plasma.
    • The lymph is a typical small bean-shaped organ that is connected by the lymphatic vessels and acts as the drainage points across the whole lymphatic system.
    • Lymph is a colorless fluid as it consists of WBCs.
    Hence, Blood consists of RBCs and WBCs both while the lymph has the WBCs is the correct answer.
  • Question 7
    1 / -0
    Increase in count of RBC is
    Solution
    A. Polycythemia
    Reason: An increase in the number of red blood cells or Erythrocytes in the body is known as polycythemia. 

  • Question 8
    1 / -0
    In a healthy human, the most common type of blood cells are
    Solution
    RBC or red blood cells are most abundant blood cells in a healthy individual. In cases of a disease, WBC count increases to help the body fight against pathogens/allergens.
    So the correct answer is option C.
  • Question 9
    1 / -0
    What are phagocytic cells from the given diagram?

    Solution
    The given diagram shows different types of white blood cells or leucocytes.
    I represents monocyte.
    II represents lymphocyte.
    III represents eosinophil.
    IV represents basophil
    V represents neutrophil. 
    Out of these cells, phagocytic cells are monocytes and neutrophils i.e. I and V. 
    Monocytes are agranulocytes which are actively motile and phagocytic cells. Neutrophils are granulocytes which perform phagocytosis and destroy harmful bacteria entering the body.
    So, the correct answer is 'I and V'.
  • Question 10
    1 / -0
    Abnormal fall in total count of WBCs in the human blood is called:
    Solution
    Leucopenia is the decrease in WBCs (white blood cells) in the blood. 
    This increases the chances of infection in body. WBCs are involved in the immunity of body and destroy foreign pathogens and particles. 
    However, the number of WBCs may also decrease due to acute infection and this leads to weak immunity. 
    Leucopenia have further subtypes depending upon which type of leucocytes are decreasing. 
    There are five types of leucocytes in our body, basophils, eosinophils, neutrophils, lymphocytes and monocytes. 
    If there is decrease in count of neutrophils, the condition is known as neutropenia. Most often, leucopenia occurs due to fall in neutrophils cells.
    So, the correct answer is 'Leucopenia'.
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