NPB 11

The major function of the large intestine is to

absorb water

The small intestine of an adult human is about how long?

6 meters (18 feet)

True or false: Chemical digestion occurs when our teeth chew food into pieces convenient for swallowing.

FALSE

The pharynx opens into both the trachea and .

esophagus

The ultimate purpose of digestion is to

hydrolyze food.

The term for taking food into the mouth is

ingestion

The cecum, colon, rectum, and anal canal make up the

large intestine intestine

Contents of the digestive system are moved along by rhythmic contractions and relaxations of smooth muscle. This process is called-------

peristalsis

True or false: Alcohol can be absorbed by the stomach.

true

Select all of the enzymes involved in the digestion of carbohydrates.

amylase lactase

The term "digestion" refers specifically to

breakdown of food into smaller pieces, either mechanically or chemically.

In the digestive tract, the lumen is defined as the-----

central space.

Select all of the roles of bacteria in the formation of feces.

create odors and gases part of the solids

The process of feces expulsion is called

defecation.

Organic macromolecules are too big to cross the plasma membrane of cells. Therefore, they need to be

digested

Which of the following are functions of the stomach?

digestion of proteins control movement of food into small intestine storage of food

The component of the food passageway that leads away from the pharynx is the

esophagus

The pharynx opens into both the trachea and-----

esophagus

During swallowing, a bolus of food is moved from the pharynx to the

esophagus.

Select all common symptoms or signs of lactose intolerance.

excessive gas bloating abdominal cramps

Select all functions of the large intestine.

forms feces absorb some vitamins absorb water

Which organ is responsible for the storage of bile?

gallbladder

The anterior portion of the roof of the mouth that contains several bones is the----- palate.

hard

The small intestine is so named because it

has a smaller diameter than the large intestine.

The main sugar present in milk is

lactose

Select the correct statements about the pancreas.

located in back of abdomen behind the stomach secretes insulin secretes enzymatic juices that aid in digestion

The open area or central space in the GI tract is called the

lumen

What is the role of fiber in the formation of feces?

makes up part of the solids

Which type of digestion occurs when the teeth chew food into small pieces?

mechanical

In the small and large intestine, peristalsis most directly results in

movement of digestive tract contents.

Select all of the accessory organs of the human digestive system.

pancreas gallbladder liver

The three main (abdominal) accessory organs of the human digestive system are the gallbladder,------ , and--------.

pancreas liver

Select all correct characterizations of the gallbladder.

pear-shaped organ stores bile located below the liver

Select all of the enzymes involved in the digestion of proteins.

peptidase pepsin trypsin

Which of the following are functions of the pancreas?

produces sodium bicarbonate to neutralize the stomach acid. produces enzymes to break down all types of food.

Select all of the parts of the large intestine.

rectum cecum colon

Which of the following is produced by the pancreas to neutralize stomach acid?

sodium bicarbonate

The term "ingestion" refers specifically to

taking food into the mouth.

Both mechanical and limited chemical digestion occurs in the mouth.

true