I have 4 case study that i need help i already upload i need to done by june 2

Bio 2256

Name:____________________________________________

Case Study 4

Below are two (2) narratives about the digestive system, answer the questions associated with each. You may work in small groups, but make sure that each team member turns in a sheet with their name on it. Feel free to ask questions to clarify any of the information below.

1: After a hard day at work, Frank sits down at the table to eat dinner. As he smells the food he can feel his stomach start to growl.

Question 1: Explain the structure of the gastric pits in the stomach and what each different cell secretes, and the action of those secretions.

Question 2: Explain the three phases of gastric secretion control, be sure to explain the how the different hormones affect secretion.

Question 3: Explain how gastric emptying is controlled, be sure to explain how is both promoted and inhibited depending the components of chyme, actions of the stomach and small intestine, and which specific hormones are secreted.

After finishing his large meal, Frank sits on the couch and relaxes. As he is sitting there he can hear his digestive tract gurgling.

Question 4: Identify all the different types of motility in the digestive tract and their functions. Be sure to classify those actions that are moving and mixing.

2: For dinner Bob has steak, a baked potato with butter, broccoli, a salad, and a glass of

juice.

Question 1: What components of Bob’s meal are proteins, carbohydrates, and fats?

Question 2: Explain how Bob’s digestive system breaks down carbohydrates, start in the mouth and finish with the large intestine. Be sure to include all enzymes and their actions.

Question 3: Explain how Bob’s digestive system breaks down proteins, start in the mouth and finish with the large intestine. Be sure to include all enzymes and their

actions.

Question 4: Explain how Bob’s digestive system breaks down fats, start in the mouth and finish with the large intestine. Be sure to include all enzymes and their actions.

Question 5: Explain in what form carbohydrates, proteins, and fats are absorbed in the small intestine. Explain the structures in the small intestine that work to increase surface area.