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Body Fluids and Circulation Test - 7

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Body Fluids and Circulation Test - 7
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Weekly Quiz Competition
  • Question 1
    1 / -0
    Which of the following is an incorrect statements?
    Solution
    The T wave represents the repolarization (or recovery) of the ventricles. The end of the T-wave marks the end of systole. The P-wave represents the electrical excitation (or depolarization) of the atria, which leads to the contraction of both the atria. The QRS complex represents the depolarization of the ventricles, which initiates the ventricular contraction. Thus, the correct answer is option D. 
  • Question 2
    1 / -0
    In human body, toxic substances are detoxified in 
    Solution
    The liver fulfills many vital tasks, such as digestive, hormonal, etc. and it is responsible for the proper functioning of the organism in general. It represents the body’s major detoxification system. It inactivates and removes toxic substances that have been ingested, such as food additives, harmful minerals, toxic medications, excess hormones, etc.
  • Question 3
    1 / -0
    Which one is correct regarding electrocardiograph (ECG)?
    Solution
    The P-wave represents the electrical excitation (or depolarisation) of the atria, which leads to the contraction of both the atria. The QRS complex represents the depolarisation of the ventricles, which initiates the ventricular contraction. The T-wave represents the return of the ventricles from excited to normal state (repolarisation). So, by counting the number of QRS complexes that occur in a given time period, one can determine the heart beat rate of an individual.
  • Question 4
    1 / -0
    Blood leaving lungs is rich in:
    Solution
    Oxygen saturation is more in the blood coming out from the lungs to the heart and less in blood coming to lungs. 
    When deoxygenated blood goes to lungs by pulmonary artery, it receives oxygen from inspired air and becomes oxygenated. 
    The oxygenated blood is returned to the heart by pulmonary veins.
    So, the correct answer is option A.
  • Question 5
    1 / -0
    Which of the following statement is correct ?
    Solution
    Deoxygenated blood is pumped into right atrium by vena cavas or big veins.
    Flame cells are excretory organs in Phylum Platyhelminthes.
  • Question 6
    1 / -0
    Which of the following parts of heart first receives deoxygenated blood?
    Solution
    • The right auricle receives deoxygenated blood from the superior and inferior vena cava. 
    • Deoxygenated blood from all over the body comes to the right atrium via the two vena cava.
    • From the right ventricle, deoxygenated blood is pumped into the lungs.
    • After oxygenation, blood enters the left auricle through the pulmonary vein.
    • Oxygenated blood is distributed to the body through the systemic aorta that arises from the left ventricle.
    So, the correct answer is option C.
  • Question 7
    1 / -0
    Which one of the following is not related to the clotting of blood?
  • Question 8
    1 / -0
    The process of blood clot formation within the circulatory system is
    Solution
    Thrombosis is the formation of a blood clot inside a blood vessel, obstructing the flow of the blood through the circulatory system.
    Thrombocytes are also called 'platelets' and these are the blood cells, whose function is to stop bleeding.
    Thrombin is the enzyme that converts fibrinogen to fibrin, and a reaction that leads to the formation of fibrin clot.
    Thrombocytopenia is the disorder in which there is an abnormally low amount of platelets.
    Thus, the correct answer is option (A).
  • Question 9
    1 / -0
    Which of the following is not a type of WBC?
    Solution

    Erythrocytes are the RBCs. White blood cells are the cells that help the body fight infection. There are a number of different types and sub-types of white blood cells which each have different roles to play.

    The two major types of white blood cells are:

    • Granulocytes
    • Agranulocytes

    Hence the correct option is D.
  • Question 10
    1 / -0
    In a resting person, the saturation level of haemoglobin as blood leaves the tissue capillaries is approximately
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