Chapter 22

Bile from the liver is stored in the _____before entering the intestine

Gallbladder

Digestion is

breakdown of food into small nutrient molecules that the body can absorb

A digestive tube is best defined as

A tube shaped digestive compartment that has two openings and through which food moves in one direction

Together with the small intestine, the ____absorbs water.

Colon

What is the main digestive function of the pancreas

It's produced digestive enzymes and neutralizes stomach acids

Which of the following choices lists the organs of the human body alimentary canal in the correct order?

Oral cavitiy, pharynx, esophagus, stomach, small intestine, large intestine

Vitamins are

Organic molecules that are required in the first in very small amounts.

muscular contraction moves food through the alimentary canal by a process called

Peristalsis

The esophagus and trachea are both open to the

Pharynx

Which structure stores feces until they can be eliminated

Rectum

Most nutrient absorption occurs in which part of the digestive system

The several meters of the small intestine that come after the duodenum

Someone with liver failure will, in particular, have problems with the digestion and absorption of

Fats

Which of the following is an example of mechanical digestion

Chewing

The epithelial cells lining the intestine have surface projections that are major sites for nutrient absorption. These projections are called

Microvilli

Which one of the following correctly represents the order in which food coming into the body passes trough the structures of the digestive system

Mouth, pharynx, esophagus, stomach, small intestine, large intestine

Which of the following mechanisms helps prevent gastric juice from digesting the stomach lining

Mucus coating the inside surface of the stomach

The stomachs gastric juice consists of

Mucus, digestive enzymes, and hydrochloride acid

What is the epiglottis?

a flap that flips down to cover the entry to the trachea during swallowing

Certain amino acids are called essential because they ______.

cannot be made by the body from other compounds