1: After a hard day at work, Frank sits down at the table to eat dinner....

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Medical Sciences

1: After a hard day at work, Frank sits down at the table to eatdinner. As he smells the food he can feel his stomach start togrowl.
Question 1: Explain the structure of the gastric pits in thestomach and what each different cell secretes, and the action ofthose secretions.
Question 2: Explain the three phases of gastric secretioncontrol, be sure to explain the how the different hormones affectsecretion.
Question 3: Explain how gastric emptying is controlled, be sureto explain how is both promoted and inhibited depending thecomponents of chyme, actions of the stomach and small intestine,and which specific hormones are secreted. After finishing his largemeal, Frank sits on the couch and relaxes. As he is sitting therehe can hear his digestive tract gurgling.
Question 4: Identify all the different types of motility in thedigestive tract and their functions. Be sure to classify thoseactions that are moving and mixing.

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1 Gastric pits are indentations in the stomach that denote the entrances to gastric glands They contain several exocrine gastric cells Gastric exocrine secretory cells Parietal or oxyntic cells secrete HCl and intrinsic factor Chief cells secrete pepsinogen Mucous cells secrete mucus Endocrine cells known as Gcells found only in pyloric gland area secrete gastrin HCl kills bacteria and denatures protein The intrinsic factor helps in the absorption of vitamin See Answer

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