Chapter 4 Quiz

All of the following represent secretions of the digestive tract except A. acid B. bolus C. bile D. saliva

B. bolus

What are the two methods of digestion in human GI system? A. Mechanical and Chemical B. Chemical and Maternalized C. Mastication and Chemical D. Mechanical and Internal

A. Mechanical and Chemical

Passive diffusion occurs when the higher concentration of a nutrient drives its absorption through the walls of the small intestine. A. True B. False

A. True

The cardiovascular system distributes nutrients through the bloodstream. A. True B. False

A. True

Both water-soluble and fat-soluble nutrients are transported via the same system from the small intestine. A. True B. False

B. False

The villi regulate the movement of chyme from the stomach to the small intestine. A. True B. False

B. False

A primary function of the digestive system is the A. transmission of nervous impulses B. production of red blood cells. C. destruction of toxic metabolic by-products D. breakdown of food into nutrients.

D. breakdown of food into nutrients.

An _____ is a compound that speeds up (catalyzes) a chemical reaction. A. acid B. electron C. anion D. enzyme

D. enzyme

The ___________ prevents food from entering the passageway to the lungs during swallowing. A. pancreas B. gallbladder C. tongue D. epiglottis

D. epiglottis

This is a picture showing which type of digestive movement? A. Segmentation B. Motility C. Peristalsis D. Mixation

C. Peristalsis