Exam 16: The Digestive System

The portion of the large intestine just before the rectum is the:

Which layer of the GI tract is responsible for peristalsis?

The names of enzymes, usually include the name of the substrate and the suffix _______.

The voluntary expulsion of feces from the anus is known as ______________.

E. coli is not normally found in the digestive system; it is only found when a person has acquired food poisoning from eating tainted food.

The digestive system's job is to prepare nutrients to circulate through the ______________.

What is the function of structure B?

All digestive enzymes work best at pH 7.

In the diagram, the arrow is pointing at the:

Which nutrient requires the least energy expenditure to arrive in the blood stream?

Some enzymes are free-floating in the fluid of the bolus and chyme, while others are located on the surface of the cells of the small intestine.

During phase B the release of which hormone increases?

The tonsils and MALT are both immune structures associated with the digestive system.

The small folds on the inner wall of the small intestine that contain lacteals are called ________.

The tongue moves the chewed food around the mouth and mixes it with saliva to form a _________, which is then swallowed.

Cows feed on grass which humans can't digest and therefore expand the food supply.

Mesenteries are folds in the abdominal lining that help to secure the digestive organs.

Chemical digestion of carbohydrates takes place:

What is the name of the structure labeled A?

___________ results from chyme moving too quickly in the colon for water to be absorbed adequately.