29.Which of the following statements regarding the regulation of gastric secretion is true? A.The autonomic nervous system is involved in cephalic-phase regulation only. B.The autonomic nervous system is involved in gastric-phase regulation only. C.The autonomic nervous system is involved in intestinal-phase regulation only D.The autonomic nervous system is involved in above-mentioned three phases E.The autonomic nervous system is involved in none of the above-mentioned three phases. 30.When parietal cells are stimulated,they secrete A.HCI and intrinsic factor C.HCI and HCO3 E.Mucus and pepsinogen I I.Define the concepts(5 marks each,30 marks in total) 1.Action potential Glomerulotubular balance Enterohepatic circulation of bile salt 5.Sretch reflex: 6.Central venous pressure II.Answers the following questions(10 marks each,40 marks in total) 1.What is the Characteristics of carrier mediated diffusion 2.If arterial PCO,is increased,how the respiration will be changed,please describe the mechanisms. 3.Please describe the recurrent inhibition 4.What are sound v waves What is responsible for the pitch,intensity of a sound? 66 29. Which of the following statements regarding the regulation of gastric secretion is true? A. The autonomic nervous system is involved in cephalic-phase regulation only. B. The autonomic nervous system is involved in gastric-phase regulation only. C. The autonomic nervous system is involved in intestinal-phase regulation only. D. The autonomic nervous system is involved in above-mentioned three phases. E. The autonomic nervous system is involved in none of the above-mentioned three phases. 30. When parietal cells are stimulated, they secrete A. HCl and intrinsic factor B. HCl and pepsinogen C. HCl and HCO3– D. HCO3–and intrinsic factor E. Mucus and pepsinogen I I. Define the concepts (5 marks each, 30 marks in total) 1. Action potential 2. Cardiac cycle 3. Glomerulotubular balance 4. Enterohepatic circulation of bile salt 5. Sretch reflex: 6. Central venous pressure III. Answers the following questions (10 marks each, 40 marks in total) 1. What is the Characteristics of carrier mediated diffusion 2. If arterial PCO2 is increased, how the respiration will be changed, please describe the mechanisms. 3. Please describe the recurrent inhibition 4. What are sound waves? What is responsible for the pitch, intensity of a sound?