PHYSIOLOGY-HIGH YIELD FACTS


1. Cell drinking, an active process which carries is the unit membrane is also called as [Pinocytosis]

 2. Proteins enter the cell by the process called as [Pinocytosis]

 3. The basic structural unit for electromyography is [Motor unit]

 4. The neurotransmitter released at motor end plate is [Acetylcholine]

 5. The synaptic delay during impulse transmission in a nerve is [0.5 milli seconds]

 6. Time required to stimulate nerve with twice rheobase voltage is called as [Chronaxie]

 7. Maximum frequency of effective nerve stimulation is limited by the strength of [Chronaxie]

 8. The resting membrane potential of a nerve membrane is on [-70 to -90 mv]

 9. Chemical gradient across cell membrane is mainly maintained by [K+]

 10. Resting nerve membrane is [50-100 times] more permeable to K+ than to Na+.

 11. In a motor neuron the equilibrium potentials for Na+, Cl- and K+ ions is [+60, -90, -70 mv]

 12. Cell to cell conduction is not possible in [Skeletal] type of muscle.

 13. High resistance to passive stretch of a muscle is called as [Contracture]

14. The protein to which calcium ion binds in the muscle fibre to trigger contraction is [Troponin]

15. The sensory organs concerned with the maintenance of skeletal muscle tonus are [Muscle spindles]

 16. Gag reflex is mediated by [9th cranial nerve]

 17. Percentage of sensory fibres in pure motor nerve is [40% percent]

 18. Resting membrane potential of nerve is equal to equilibrium potential of [Chloride ion]

 19. Normal amount of CSF in man is [150 cc]

 20. Visio-sensory centre of brain is [Occipital lobe]

21. Vomiting centre is [Medulla oblongata]

 22. Respiration centre in brain is [Medulla oblongata]

 23. Wallerian degeneration of ruptured nerve starts in [6 hours]

 24. First relay station of pain is [Spinal cord]

 25. Main relay station of pain is [Parietal lobes and precentral gyrus]

 26. Spinothalamic tract is concerned with [Pain and temperature] sensations.

 27. Important reflex centre of autonomous nervous system is [Hypothalamus]

 28. Neurotransmitter to adrenal medulla and skeletal muscles is [Acetylcholine]

 29. Neurotransmitter useful in treatment of parkinsonism is [Levodopa]

 30. Appetite and thirst centre in brain is [Hypothalamus]

 31. Temperature control centre is [Hypothalamus]

 32. Vomiting centre is [Medulla oblongata]

33. The final catecholamine formed in the biosynthesis of catecholamines is [Epinephrine]

 34. Catecholamines are formed from [Phenylalanine] amino acid.

 35. Coordination of voluntary movements and balance of the body are under the control of [Cerebellum] part of brain.

 36. Simple reflex action is under the control of [Spinal cord] part of CNS.

 37. Majority of the post-ganglionic sympathetic fibres secrete [Nor-adrenaline] transmitter.

 38. Visual area of brain is [area 17 and 18 of occipital lobe]

 39. Number of pairs of spinal nerves is [31 pairs]

 40. Speech area is [Wernicke's area of temporal lobe]

 41. Speech learning area is broca’s area. [Area 44 and 45 (or) frontal lobe]

 42. Normal pH of blood is [7.3 to 7.5]

 43. Sp. gravity of blood is [1.053 -1.057]

 44. Blood minus cellular elements is called as [Plasma]

 45. Plasma minus fibrinogen and other clotting factors is called as [Serum]

 46. Total blood volume is [18%] of body weight.

 47. Life span of RBC is [120 days]

 48. Life span of RBC in neonates [100 days]

 49. Life span of RBC in stored blood [60 days]

 50. Average size of RBC is [7 microns]

 51. Universal donor [0 – negative]

 52. Universal recipient [AB blood group]

 53. Screening test for haemophilia is [Partial thromboplastin time]

 54. The osmotic strength of human plasma is [290 mols/litre]

 55. The cells of blood which have longest life span [RBC]

 56. Commonly used preservative for blood is [Sodium citrate]

 57. Life span of lymphocyte is [3-4 days]

 58. Life span of platelets is [90 days]

 59. The amount of haemoglobin that is removed and replaced daily is [5-7 grams]

 60. Serotonin and adenosine diphosphate are released from [Platelets] during haemostasis.

 61. Reduction of RBC below normal is [Anaemia]

 62. Increase of RBC above physiological normal is called as [Polycythaemia]

 63. The most potent stimulus for RBC production is percent [Hypoxia]

 64. Compensatory mechanism occurs when blood loss is not below [30 percent]

 65. Ideal temperature for storage of blood is [4 degrees centigrade]

 66. Stored blood should be used within weeks [3 weeks]

 67. Most common blood group in India [O - positive]

 68. Most common blood group in the world [B - positive]

 69. Iron form in bone marrow is [Transferrin]

 70.Percentage of blood that is made up of RBC is called as [Haematocrit] value.

 71.The total daily volume of GIT secretion is [7000 mL]

 72. The amount of gastric secretion per day is [2000 mL] on average.

73. Hydrochloric acid is secreted by [Parietal cells]

 74. Intrinsic factor of castle is secreted by [Parietal cells of stomach]

 75. Pepsin is secreted by [Chief cells] of stomach.

 76. The hormone which stimulates pancreatic secretion is [Cholecystokinin]

 77. The pH of pancreatic juice is [8]

 78. The pH of bile is [7]

 79. The pH of gastric juice is [0.9 to 11]

 80. The hormone which stimulates gastric secretion is [Gastrin]

 81. Alpha amylase (or) ptyalin is secreted by [Parotid gland]

 82. The only sugar absorbed in intestine against concentration gradient is [Glucose]

 83. The GIT hormone while helps in protein digestion [Gastrin]

 84. Hormone which stimulates the secretion of pancreatic digestive enzymes is [Secretin]

 85. Gall bladder is contracted by the hormone [Cholecystokinin]

 86. Water is mainly absorbed from [large intestine] part of GIT.

 87. Glucose is mainly absorbed in [Small intestine] part of GIT by active transport.

 88. Transport form of Iron is [Transferrin]

 89. Storage form of Iron is [Haemosiderin and ferritin]

 90. The normal volume of airways in adult man is [150 cc]

 91. The dead space is approximately equal to [150 cc]

 92. Oxygen dissociation curve is [S - Shaped]

 93. Functional residual capacity in man is [2.2 Litres]

 94. Diffusion capacity of carbon dioxide is [20] times that of oxygen.

 95. Surfactant is secreted by [Pneumocyte-II] cells.

 96. The number of ferrous atoms in haemoglobin molecule is [Four]

 97. The number of oxygen molecules carried by Hb molecule [Four]

 98. The ratio of physiological and anatomical dead space in normal individual is [1:1]

 99. Oxygen content of saturated blood is [19.4 mL/100 mL or 97%]

100. Haemoglobin has [20 times] affinity for carbon monoxide than oxygen.

 101 Maximum voluntary ventilation is [125-170 Litres/min]

 102. Normal ventilation in adult is [6 Litres/min]

 103. Respiratory minute volume in a normal person is [6.0 L/min]

 104. Average tidal volume is [500 ml/breathe]

 105. Vital capacity of man is percent of total lung capacity [80% (or) 3500 ml]

 106. Anatomical dead space is mL [150-250 ml]

 107. 1 gm of haemoglobin carries [1.34 cc] of oxygen.

 108. Maximum amount of O2 that can be carried by 100 mL of blood is [19.6 cc]

 109. Percentage of haemoglobin saturation with oxygen in arterial blood of normal individuals is [98%]

 110. The amount of oxygen consumed by a normal adult per minute [250 mL]

 111. The normal CO2, concentration in alveolar air is [5.5%]

 112. The normal respiratory rhythm is controlled by [Hering-Breuer reflex]

 113. Average difference between the O2 content of arterial and venous blood is [5 volumes percent]

 114. Cyanosis results if arterial oxygen saturation falls below [70%]

 115. Ratio of CO2 consumed/O2 produced is called as [Respiratory quotient]

 116. Important buffer in plasma is [Bicarbonate carbonic acid]

 117. Percentage of total blood volume in aorta is [2%]

 118. Percentage of total blood volume in arteries [8%]

 119. Percentage of total volume in arterioles is [1%]

 120. Percentage of total blood volume in venous system is [60% or 3000 cc]

 121. Percentage of blood volume in arterial system is [15% (or) 750 cc]

 122. Percentage of total blood volume in capillaries [5%]

 123. Fuel used by resting heart is [Free fatty acid]

 124. Duration of cardiac cycle in man is [0.8 seconds]

 125. The middle one third of ventricular diastole is called as [Diastasis]

 126. The last one-third of ventricular systole is called as [Protodiastole]

127. In the adults, average stroke volume is [60-70cc]

128. The muscles which prevent bulging of atrioventricular valves is called as [Papillary muscles and chordae tendineae]

129. Under resting condition, the cardiac output is [5.25 litres/min]

130. Which chamber of the heart is called waiting chamber or receiving or chamber [Right atria]

131. Pace-maker in heart is [S-A-node]

132. First chamber to contract is [First atria]

133. The widest range of pressure in cardiac cycle is found in the [Left ventricular] part of heart from [Zero to 121 mm]

134. Any substance which increases heart rate (rate of contraction) is said to have [Positive chronotropic] effect.

135. Any substance which increases force of contraction and cardiac output is said to have [Positive ionotropic] effect.

136. The tongue-heart interval of blood circulation is approximately seconds [12-15 seconds]

137. Work done by heart/day is [75000-foot pound]

138. Work done by heart/strokes is [95 gm/meter]

139. Normal QRS interval is [0.08 to 1 sec]

140. Normal resting membrane potential is [-80 to -90 mV]

141. First heart sound is best heard at intercostal space [5th intercoastal]

142. Second heart sound is best heard at intercostal space [2nd intercoastal]

143. Duration of systole and diastole is [0.3 and 0.5 sec]

144. Sp. gravity of urine is [1.015 to1.020]

145. Normal output of urine is [1.5 litres]

146. Renal blood flow per minute in (mL/min) is [1250]

147. Effective renal blood flow in mL/min is [625 mL/min]

148. Counter current multiplier system is present in organ [Kidney and Crypts of gastric sub mucosa]

 149. Quantity of water lost in faeces/day is [150 cc]

 150. Quantity of water lost as sweat per day [600-800 cc]

 151. In a normal adult male, the desire for micturition is feet when [300-400 cc] collected in bladder c of urine is

 152. The maximum amount of substance that can be transported in one minute by the kidney tubular is called [Tubular maximum/Tm]

 153. The volume of plasma needed each minute to supply a substance at the rate at which it is excreted is called as [Renal clearance]

154. Renal clearance is approximately [20-25%] of plasma filtration.

155. The ion in tissue fluids which is of great importance in retaining water is [Sodium ion]

156. Growth hormone inhibiting hormone is also called as [Somatostatin]

157. Growth hormone releasing hormone is also called as [Somatocrinin]

158. Substance stimulated by hormone which results in growth of tissues is [Somatomedin]

159. The hormone secreted by supraoptic nuclei of hypothalamus [ADH]

160. The hormone secreted by paraventricular cells of hypothalamus [Oxytocin]

161. Milk ejection reflex is mediated by the hormone [Oxytocin]

162. Uterine muscle contraction during labour is mediated by [Oxytocin]

163. Melatonin is secreted by gland [Pineal gland]

164. Calcitonin is produced by gland [Thyroid gland]

165. Hormone which increase sodium reabsorption is [Aldosterone]

166. Pheochromocytoma, secrete excess of [Epinephrine]

167. Leydig cells are stimulated by [LH] hormone.

168. Leydig cells of testis secrete hormone [Testosterone]

169. Sertoli cells and testis secrete [Estrogens]

170. The hormone which is responsible for secondary sexual characters and accessory sex organs in males is [Testosterone]

171. The hormone which is responsible for secondary sexual characters and accessory organs in females is [Oestrogen]

172. The hormone which is called gameto-kinetic factor is [FSH]

173. Rhodopsin is most sensitive to [Green light]

174. Rhodopsin is least sensitive to [Read light]

 175. The optical power of normal eye is [60 Dioptres]

 176. The normal serum calcium level is [9-12 mg]

 177. The normal serum phosphorus level is [3-5 mg/ 100 ml]

 178. The normal fasting blood sugar level is [90 mg]

 179. RQ of carbohydrates is [1]

 180. RQ of fats is [0.70]

 181. RQ of protein is [0.8]

 182. Sodium bicarbonate/carbonic acid ratio in plasma is [20:1]

 183. Erythropoietin is secreted by [Kidney]

 184. The organ chiefly responsible for control of pH of blood is [Kidney]