Solve Physiology INICET 2020 1. A 60-year-old patient visits the doctor for a yearly examination. On examination, his BP was 190/100 mm Hg. His pulse pressure was 90 mm Hg. What would have decreased resulting in this increase in pulse pressure? Arterial wall compliance Stroke volume Myocardial contractility Cardiac output None 2. Transcutaneous electric nerve stimulation is used to reduce pain. What is the mechanism behind this? Desensitization Central inhibition Descending inhibition Gate control theory None 3. Which of the following is not required to calculate creatinine clearance? Serum creatinine Urine creatinine 24 hour urine output Volume of serum passing through kidney in 24 hours None 4. A neuron is receiving 300 inputs from 150 sensory neurons. This is an example of a? Convergence Divergence Feedback inhibition Feedforward excitation None 5. Calculate the ECF volume in a person in whom 10 gm of mannitol was injected in venous blood. At equilibrium urinary excretion of mannitol was found to be 10% and the plasma concentration of mannitol was 65 mg/100 ml. 10L 28L 14L 20L None 6. Gibbs-Donnan equilibrium is mainly due to? Bicarbonate in the intracellular compartment Calcium in the extracellular compartment Phosphate Intracellular proteins None 7. The hormones which have intracellular Receptors are Epinephrine Thyroxine Glucagon Parathormone None 8. Intercellular communication in eukaryotes is by? Lysosome Peroxisome Genome Exosome None 9. In skeletal muscle the dihydropyridine and ryanodine receptors are coupled by___________ Electrically Chemically Chemically and then electrically Mechanically None 10. In negative feedback, feedback gain of infinity is seen in which of the following? Blood volume control by kidney Temperature control in hypothalamus BP control by barorecptors Infinite gain is not possible None 11. Least frequency of slow waves is seen in. Jejunum Duodenum lleum Stomach None 12. Which part of the nephron forms Macula densa is formed Afferent arteriole Bowman's capsule PCT DCT None 13. When the filtrate flows through PCT, the concentration of all of the following decreases except: Glucose Bicarbonate Chloride Aminoacid None 14. Determine the respiratory quotient (RQ) in a patient with 50kg body weight, if the CO2 exhaled is 200ml/min and 02 consumed is 250 ml/min. 1 0.8 1.25 1.5 None 15. Which of the following types of amino acids are present in the transmembranous part of the membrane receptor? Hydrophilic Hydrophobic Amphipathic None of the above None 16. Which of the following is not a cause of secondary hyperparathyroidism? Chronic kidney disease Vitamin D deficiency Lithium intake Parathyroid adenoma None 17. Which of the following events occur immediately when a person changes his/her posture from supine to standing? Vagal output to cardiac fibres increase Decrease in firing from baroreceptor Increase cardiac contractility Mesenteric Vasoconstriction None 18. Which of the following statements is true about skeletal muscle contraction? Ca2+ is released from mitochondria Ca2+ is released from the sarcoplasmic reticulum Extracellular Ca2+ is not important for contraction Voltage-gated Ca2+ channels on sarcolemma have no role in EC coupling 1, 2, 4 1, 3, 4 3 2, 3, 4 None 19. Arrange the following events in the sequence in which they occur, after 'p wave' in ECG: a wave in JVP Rapid filling of ventricles T wave in ECG First heart sound 1,4,3,2 1,2,3,4 1,4,2,3 2,3,4,1 None 20. Which of the following increases in COPD? TLC VC FRC FEV1/FVC 1,3 1,4 2,3 1,3,4 None 21. The given graph determines the filterability of the dextran through Kidney,1 representing complete filtration and 0 representing no filtration, choose the substance A,B,C respectively. Neutral, Polycationic, polyanionic Polycationic ,Neutral, polyanionic Polyanionic, Neutral, Polycationic polycationic, Polyanionic, Neutral None 1 out of 21 Time's up
