4801. The function common to neutrophils, monocytes & macrophages is______________?
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A. Immune response

B. Liberation of histamine

C. Destruction of old erythrocytes

D. Phagocytosis
4802. Histamine is present on surface of_______________?
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A. Neutrophils

B. Mast cells

C. Erythrocytes

D. Lymphocytes

4803. T- lymphocytes function to______________?
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A. Lymphokine production and delayed hypersensitivity

B. Antibody production

C. Immediate hypersensitivity

D. Complement activation

4804. the acrosome reaction occurs, when the sperm_____________?
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A. Comes in contact with zone pellucida

B. Penetrates cell membrane of oocyte

C. Penetrates corona radiate

D. Enters the uterine cavity

4805. Electromyography is used for________________?
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A. Determine the centric relation

B. To study muscle activity

C. Determine the centric occlusion

D. Determine class II malocclusion

4808. Hypoxia is characterized by ___________?
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A. Intense chemoreceptor response

B. All of the above

C. Low arterial PO2

D. Favorable response to 100% oxygen

4809. Which of the following events DO NOT occur in rods in response to light_______________?
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A. Activation of transducin

B. Decreased intracellular cGMP

C. Structural changes in rhodopsin

D. Opening of Na+ channels
4810. To measure renal plasma clearance compound should be_________________?
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A. Secreted by the tubules

B. Completely filtered by glomerulus

C. <70,000 Mol.wt

D. Bound to plasma protein

4812. For heparin which of the following is ?
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A. Is released by mast cells

B. Is released by macrophages

C. Inhibits conversion of fibrinogen to insoluble fibrin

D. Interferes with action of thrombin

4813. Hemoglobin has______________?
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A. Four polypeptide chains, 2?, 1?,1? chain

B. One heme and one globin molecule

C. Four heme molecules and four polypeptide chains

D. Four heme molecules, 2? and 2? chains

4815. The skeletal muscle action potential______________?
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A. Has a prolonged plateau phase?

B. Begins with an, in ward movement of K+ ins

C. Spreads in ward to all parts of the muscle via the t- tubule system

D. Is not essential for contraction to occur

4816. Which of the following is not a cause of secondary polycythemia ?
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A. High Altitude

B. Myeloproliferative changes

C. Pheochromocytoma

D. Cerebellar hemangioblastoma

4817. Which of them is not affected by vitamin K deficiency_____________?
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A. Factor II

B. Factor IX

C. Factor VII

D. Factor VIII
4818. Normal myeloid / erythroid ratio is______________?
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A. 1:1000

B. 3.513888889

C. 0.111111111

D. 1:50

4819. Inability of exchange of oxygen through lung tissue if known as____________?
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A. Histotoxic hypoxia

B. Anoxia

C. Anoxic anoxia

D. Ischemic hypoxia

4820. Normal prothrombin time is____________?
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A. 5-7 sec

B. 30 sec

C. 10-20 sec

D. 1 min

4821. Oxygen affinity decreases in_________________?
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A. Hypoxia

B. HbF

C. Hypothermia

D. Increased pH

4822. Thrombopoietin is produced by_________________?
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A. Megakaryoblast

B. Liver

C. Monocytes

D. Megakaryocyte

4826. Limitation of inspiration by vagal lung inflation signals is called the______________?
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A. Autonomic reflex

B. Herring Breur reflex

C. Bainbridge reflex

D. Dynamic stretch reflex

4828. The renal threshold for glucose is_______________?
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A. 80 mg/dl

B. 120 mg/dl

C. 100 mg/dl

D. 180 mg / dl
4829. Iron is stored in_______________?
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A. All

B. RBC

C. Plasma

D. Reticule endothelial system
4830. Test for estimating kidney function is_______________?
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A. Inulin test

B. Insulin test

C. Serum phosphatase

D. Serum creatinine

4831. The number of muscle fibers in a motor unit are least in______________?
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A. Laryngeal muscles

B. Extraocular muscles

C. Muscles of middle ear

D. Pharyngeal muscles

4832. Megaloblasts are precursors of_____________?
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A. Myelocytes

B. Macrocytes

C. Norm oblasts

D. Megakaryocytes

4833. The function of plasma cell______________?
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A. Antibody formation

B. CMI

C. Phagocytosis

D. Opsonization

4834. The normal absolute eosinophil count is_____________?
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A. 1500 to 2,000cells/C.mm

B. 500 to 900 cells/C.mm

C. 1200 to1500cells/C.mm

D. 40 to 440 cells/C.mm
4835. A decrease in the urine output is called_____________?
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A. Dysuria

B. Oliguria

C. Plyuria

D. Nocturia

4836. During exercise_____________?
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A. Body temperature increases

B. Lymphatic flow from muscle decrease

C. Cerebral blood flow increases if there is increase in systolic blood pressure

D. Blood flow to muscle increases after 1 minute

4837. Brush border is seen in________________?
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A. Bowmans capsule

B. Proximal convoluted tubule

C. Distal convoluted tubule

D. Loop of Henle

4838. Vital capacity is a measure of________________?
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A. Tidal volume plus inspiratory reserve volume plus expiratory reserve volume

B. Expiratory reserve volume plus reserve volume

C. Inspiratory reserve volume plus expiratory volume

D. Tidal volume

4839. The absolute refractory period of an action potential is due to _______________?
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A. Insufficient neurotransmitter

B. Inactivation of Na+ k+ ATPase

C. Depletion of intracellular Na+

D. Voltage inactivation of the Na+ channel
4840. In an isotonic contraction of the muscle________________?
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A. The muscle is not able to move the load

B. The muscle moves a load through a distance

C. The latent period of contraction is shorter than isometric contraction

D. The length of muscle is increased

4841. Muscle of expiration____________?
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A. Internal intercostals

B. External intercostals

C. Diaphragm

D. Rcti Abdominis

4842. The renal clearance of _______________?
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A. Inulin is lower than that of urea

B. PAH continues to rise as the plasma concentration of PAH increases

C. Creatinine indicates glomerular filtration rate

D. Chloride increases after in injection of aldosterone

4844. In cases of hypercapnia there is_______________?
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A. Increased oxygen concentration in blood

B. Decreased pH of blood

C. Remains same

D. Increased pH of blood

4845. The normal adult value of urine output________________?
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A. 2 l/day

B. 0.5 l/day

C. 1.5 l/day

D. 3 l/day

4846. The type of hypoxia present in high attitude is_____________?
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A. Histotoxic Hypoxia

B. Stagnant Hypoxia

C. Anemic Hypoxia

D. Hypoxic Hypoxia
4847. Citrate is a useful anticoagulant because of its ability to_____________?
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A. Chelate calcium

B. Bind factor XII

C. Buffer basic groups of coagulation factors

D. Bind vitamin K

4848. Acute bacterial pyogenic infection manifests as_________________?
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A. Lymphopenia

B. Leukopenia

C. Leukocytosis

D. Neutropenia

4849. Plasma cells are constituent of_____________________?
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A. Epithelial tissue

B. Muscular tissue

C. Nervous tissue

D. Connective tissue