chapter 9 : digestive system and nutrition (pt. 1)

The stomach is shaped most like the letter

J.

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

True

The function of bile is to __

emulsify fat.

What protein triggers the autoimmune response of celiac disease?

gluten.

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

hard

The soft palate ends in a finger-shaped projection of soft tissue called the

uvula.

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

False

The ultimate purpose of digestion is to

hydrolyze food.

The main sugar present in milk is __

lactose.

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

mechanical.

The posterior portion of the roof of the mouth that is composed entirely of muscle is the __ palate.

soft

The uvula is a finger-shaped structure that projects from the

soft palate.

The term "ingestion" refers specifically to

taking food into the mouth.

Which of the following are functions of the stomach?

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

Select all of the statements that describe the stomach.

-it has a thick wall of muscle -when the stomach is empty, deep folds or rugae are visible

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

6 meters (18 feet)

The enzyme that functions in the small intestine to digest carbohydrates is pancreatic __

amylase.

In the digestive tract, the lumen is defined as the

central space.

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

digested, hydrolyzed, hydrolyze, or broken down

The first 25 cm of the small intestine is called the __

duodenum.

The pancreas secretes digestive enzymes directly into the __

duodenum.

The small intestine is so named because it

has a smaller diameter than the large intestine.

The term for taking food into the mouth is

ingestion.

The enzyme produced by the pancreas for the breakdown of lipids is pancreatic __

lipase.

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

lumen.

The tonsils are made of what type of tissue?

lymphatic.

The adenoids are located in the

nasopharynx

The mouth is also known as the __ cavity.

oral

The esophagus and trachea both connect to the

pharynx.

Areas of lymphatic tissue located in the back of the mouth, on either side of the tongue, are called the __

tonsils.