Examination of blood of a person suspected of having anemia,shows large, immature, nucleated erythrocytes without haemoglobin. Supple menting his diet with which of the following, is likely to alleviate his symptoms?
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Solution
Folic Acid (Cyanocobalamine vit. B12) works in the formation and maturation of RBCs. In the deficiency of this RBCs formation decreases and the formed RBCs will not mature i.e. they will not loose the nucleus and hence remain nucleated and lack haemoglobin. Such RBCs cannot carry oxygen & person suffers from anaemia. Supplementing his diet with folic acid and cobalamine will lead to the increased formation and proper maturation of enucleated RBCs with haemoglobin and eliminate anaemia.
A drop of each of the following, is placed separately on four slides. Which of them will not coagulate?
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Solution
Blood serum is liquid minus clotting elements of pale yellow colour.It does not have fibrinogen and other clotting materials. It does not take part in blood clotting
Which type of white blood cells are concerned with the release of histamine and the natural anti- coagulant heparin?
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Solution
Basophil is a type of white blood cell (leucocyte) that has a lobed nucleus surrounded by granular cytoplasm.Basophils are produced continually by stem cells in the red bone marrow & move about in an amoeboid fashion.Like, mast cells, they produce histamine and heparin as part of the body’s defences at the site of an infection or injury.
The most active phagocytic white blood cells are:
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Solution
The most active phagocytic white blood cells are neutrophils and monocytes. Neutrophil is a type of WBC (leucocyte) that has a lobed nucleus and granular cytoplasm. Neutrophils engulf bacteria and release various substance such as lysozyme and oxidizing agents. Monocyte is the largest form of WBC in vertebrates. It has a kidney shaped nucleus and is actively phagocytic,ingesting bacteria and cells debris
‘Bundle of His’ is a part of which one of the following organs in humans?
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Solution
‘Bundle of His’ are a typical cardiac muscle fibres,connecting the atria with ventricle.
Which one of the following plasma proteins is involved in the coagulation of blood ?
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Solution
Fibrinogen, the protein of blood plasma is converted to insoluble protein fibrin during the clotting process. The fibrinogen free fluid obtained after removal of the clot,called blood serum is plasma minus fibrinogen.
Arteries are best defined as the vessels which :
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Solution
Arteries are the vessels which break up into capillaries which reunite to form one visceral organ.
Which one of the following statements is correct regarding blood pressure ?
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Solution
90/110 mm Hg may harm vital organs like brain and kidney. This is called hypertension which can give rise to increased heart rate and palpitation.
Given below is the ECG of a normal human. Which one of its components in human is correctly interpreted below
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Solution
Peak P-causes diastolic phase in ventricle while R-Peak causes systole in ventricle means diastolic and systolic phases represented by P &R.
Bulk of carbon dioxide (CO2) released from body tissues into the blood is present as
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Solution
70% to 75% CO2 is transported as primary buffer of the blood. Bicarbonate ion (HCO3) in blood plasma. When CO2 diffuses from tissues into blood then it is acted upon by the enzyme carbonic anhydrase.