Digestive System Review

What type of digestion occurs in the mouth?

• chemical only

• mechanical only

• chemical and mechanical

• no digestion occurs in the mouth

The muscle contractions that push food through the esophagus are called _____.

They are controlled by _____ muscle tissue.

• peristalsis - cardiac

• regurgitation - skeletal

• peristalsis - smooth

• convulsion - smooth

How is the stomach protected from the acid that is produces?

• The acid is immediately sent to the small intestine, so if has no effect

• Immune cells fight off the acid

• It secretes a base to neutralize the acid

• It secretes a protective layer of mucus that coats the lining

Which digestive enzyme is correctly paired with the molecule it breaks down?

• amylase - carbohydrates

• pepsin - lipids

• protease - maltose

• lipase - amino acids

These microscopic structures line the small intestine and increase surface area for maximum nutrient absorption.

• fungiform

• typhlosole

• villi

• rugae

Bile is produced by the _____ and stored in the _____ before it is sent to the small intestine.

• pancreas - stomach

• salivary glands - mouth

• intestine - liver

• liver - gallbladder

The main job of the large intestine is to

• create intrinsic factor

• absorb water from waste

• complete the digestion of nutrients

• produce digestive enzymes

Bacterial flora in the large intestine do all of the following EXCEPT

• form feces

• produce B vitamins

• ferment indigestible carbohydrates

• produce K vitamins

Which choice shows the correct order that food moves through the digestive system?

• esophagus - large intestine - small intestine

• mouth - stomach - pancreas

• esophagus - stomach -small intestine

• stomach - liver - small intestine

Why is it important for chyme to be delivered slowly into the small intestine? Choose all that apply!

• Chyme is hypertonic

• Chyme is very acidic

• So nutrients have a chance to be absorbed efficiently

• To stop segmentation