Exam 3: Digestion, Absorption, and Transport

Ulcers can be caused by ____.

Which organ does not secrete digestive enzymes?

Discuss motility of the digestive tract by explaining the differences between peristalsis and segmentation. Identify the roles of the four major sphincter muscles that divide the GI tract into its principal regions.

In which structure does the digestion process begin?

The chief purpose of the gallbladder is to store ____, which is required for the assimilation of dietary ____.

Which substance controls the release of hydrochloric acid in the stomach to prevent excessive acidity? ​

Colonic irrigation is a(n)____ and popular practice for treatment of ____.

Which product of digestion is not normally released directly into the bloodstream? ​

Which dietary substance is not a substrate for the digestive enzymes present in the pancreatic juice secreted into the intestinal tract? ​

Cirrhosis of the liver is characterized by extensive scarring that occurs as the liver tries to repair itself in response to damage. This condition has many causes, most notably chronic alcoholism. Why can excessive consumption of alcohol (a toxin)lead to cirrhosis?

Nancy is having difficulty digesting fatty foods. Her physician found no evidence of inflammation, and suspects that the gallbladder is not releasing adequate bile in response to fat in the small intestine. Which hormone may be malfunctioning?

Discuss the response of the pancreas (enzyme secretion)upon exposure to diets differing in the amounts of protein, fat, and carbohydrate. What is the most likely explanation for the observation that a person may experience " upset digestion " upon changing the diet? Why isn ' t the pancreas damaged by its own digestive enzymes?

Which meal will require the greatest time for digestion? ​

The muscular reaction of the stomach to unchewed lumps of food or to being overfilled may interfere with normal peristalsis. This condition is known as ____. ​

Compare and contrast the causes, symptoms, and treatments of irritable bowel disease, colitis, and celiac disease.

After sitting through a 2-hour math lecture, your stomach is growling. You have just learned about surface area and its role in mathematics. Your classmate points out that surface area is also integral to the absorption of nutrients due to the ____.

In the stomach, hydrochloric acid ____. ​

The most common cause for the development of peptic ulcers is ____. ​

The process by which food is broken down into absorbable components is called ____.

What is the order by which digested food travels through the colon? ​