Exam 3: Digestion: From Meals to Molecules

Food still in the lumen is not available for use by the cells.

Each villus contains a capillary where fat-soluble nutrients are absorbed.

The ____ is responsible for swallowing and is also a part of the respiratory tract.

Vitamin E and fatty acids are absorbed via

Protein molecules that increase the rate of specific chemical reactions without themselves being changed are

Fiber retains water, thus when adequate fiber and fluids are consumed, feces have a higher water content and are more easily passed.

Identify each of the structures within the digestive system.

Amylase is a hormone that digests carbohydrates.

The most common cause of peptic ulcers is misuse of medications such as aspirin or nonsteroidal anti-inflammatory drugs.

____ is a chronic condition in which acidic stomach contents leak into the esophagus, causing pain and damaging the esophagus.

_____ is a circular muscle that acts as a valve, opening and closing to allow the gastric contents to move throughout the GI tract.

As compared to when you are at rest between meals, when you have eaten a meal, a ____________ proportion of your blood goes to your digestive system.

Gallstones can interfere with bile secretions and reduce fat absorption.

The nutritional composition of a meal affects how long it stays in the stomach.

Protein is synthesized by the _____ of the cell.

Sugars, amino acids, and fatty acids are absorbed into the body.

Indicate the name of each of the marked organs and describe each organ's function in the digestive system.

Lymph vessels from the intestine drain into the thoracic duct near the heart.

Glucose can be used to make fatty acids.