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During the later stages of pregnancy, maternal blood pressure can fall if the woman lies on her back (supine hypotension). This is due to a) A reduction in maternal venous return b) A decrease in maternal heart rate because of the uterus pressing on the heart through the diaphragm c) Compression of the vena cava d) Increased fetal activity associated with discomfort due to compression of the fetus against the maternal vertebral column.
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Active vitamin D: a) Receptors are found in osteoblasts. b) Facilitates bone formation. c) Increases calcium ion transport across the intestinal brush border d) Facilitates bone resorption.
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Red blood cells measured 15 um in diameter |
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Red blood cells do not contain mitochondria |
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Red blood cells has a life span of 120 days in the circulation |
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Red blood cells are released from the bone marrow as mature erythrocytes |
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A red blood cell expresses HLA class II antigens on the cell surface |
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ABO and rhesus (Rh) system, a person of group O is a universal donor |
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ABO and rhesus (Rh) system, a person who is group AB has anti-A and anti-Bantibodies |
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ABO and rhesus (Rh) system, the presence of the D antigen means that thesubject is Rh positive |
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ABO and rhesus (Rh) system, d. rhesus antibodies occur naturally |
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The oxygen dissociation curve is shifted to the right with poly-cythaemia |
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The oxygen dissociation curve is shifted to the right with pyrexia |
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The oxygen dissociation curve is shifted to the right with respiratory acidosis |
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The oxygen dissociation curve is shifted to the right with sickle cell anemia
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The oxygen dissociation curve is shifted to the right with decreased concentration of2, 3-DPG in the erythrocytes.
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The intracranial pressure is decreased by intravenous mannitol |
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The intracranial pressure is decreased by placing the patient in a head-up position |
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The intracranial pressure is decreased by hyperventilation |
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The intracranial pressure is decreased by a rise in the arterial pCO2 |
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