Solve Physiology INICET 2021 1. All are involved in renal auto-regulation. except Renal sympathetic system fibres Renin-angiotensin system Myogenic reflex Tubuloglomerular feedback None 2. The formula for urea clearance is U*V/P, where U is Serum urea in mg /100ml Urine volume Urine urea in g/24h Urine urea in mg/100ml None 3. The relaxation of the intestinal segment distal to the segment with the bolus of food during peristalsis is because of Substance P Vasoactive Intestinal Peptide Acetylcholine from myenteric fibres Dopamine from adrenergic fibres None 4. A patient presented with severe watery diarrhea resembling that of rice gruel stool. Damage of which structure is likely to have resulted in this diarrhea? Gap junction Adherent junction Zona occludens Hemidesmosomes None 5. Beta hCG is structurally similar to LH ACTH FSH Oxytocin None 6. What is the duration of short term memory? 12-18 hours 3-6 Hours 3-4 seconds 30-300 seconds None 7. The stroke volume depends on end-diastolic volume. This is best represented as Length-velocity relationship Length-force relationship Length-viscosity relationship Length-tension relationship None 8. Which of the following ions in the thick ascending limb of the loop of Henle is responsible for the resorption of divalent ions? HCO3- H+ K+ Na+ None 9. Which of the following sensory receptors are responsible for tactile discrimination? Ruffini end organ Pacinian corpuscle Merkel disc Meissner's corpuscle None 10. All of the following increases gastric acid secretion except Gastrin Acetylcholine Histamine Serotonin None 11. Pacinian corpuscle is stimulated by which of the following? Touch Pain Pressure Temperature None 12. Which of the following jugular venous pressure (JVP) waves corresponds to the isovolumetric contraction phase of the cardiac cycle? x descent y descent c wave a wave None 13. The extracellular concentration of chloride is 100mmol/L and the intracellular concentration is 10 mmol/L. What is the equilibrium potential of chloride? -10 mV +10 mV -60 mV +60 mV None 14. After reaching an equilibrium state during exercising, it was found that the body was consuming oxygen at the rate of 1500 ml/min. Calculate the MET score if the baseline oxygen consumption at rest is 250 ml/min. 6 5 ⅙ ⅕ None 15. All of the following cause a right shift of the oxygen-hemoglobin dissociation curve, except Acidosis Increased Fetal hemoglobin Raised 2,3 Bisphosphoglyceric acid Increased CO2 None 16. The latent period, contraction period, and relaxation period of a skeletal muscle are 10 ms, 40 ms, and 50 ms respectively. Calculate the tetanizing frequency. 100 per second 50 per second 20 per second 25 per second None 17. An individual is in an environment of a temperature of 47°C. What is the mechanism of heat loss? Radiation Conduction Convection Sweating None 18. If the contractility of the heart is decreased, which of the following is seen Slope changes in ESV pressure curve End diastolic volume and pressure curve shifts to left without change in slope End systolic volume and pressure curve shifts to left without change in slope Slope changes in EDV and pressure curve None 19. A lesion in which lobe will lead to impairment of hand-eye coordination? Frontal lobe Parietal lobe Temporal lobe Occipital lobe None 20. Sodium iodide symporter is present in all of the following except: Placenta Thyroid gland Salivary gland Pituitary gland None Time's up
