HUN2201 Nutrition Chapter 3 Study Questions

a. lumen b. sphincter c. gallbladder d. duodenum

a. space within a vessel such as the intestine b. circular muscle surrounding and able to close; a body opening c. organ that stores and concentrates bile d. top portion of small intestine

What does each hormone cause? a. gastrin b. CCK c. secretin

a. triggers release of HCL into the stomach b. triggers bile secretion into the small intestine c. triggers secretion of bicarbonate rich juices into the small intestine

Live microbes that change the condition in the GI tract in ways that seem to benefit health are called

probiotics

The (BLANK) glands play an initial but small role in digestion

salivary

Absorption occurs primarily in the

small intestine

The (BLANK) muscle allows the contents of the GI tract to move along at a controlled pace by periodically opening and closing

sphincter

The (BLANK) system is a closed system of vessels through which blood flows

vascular

The fingerlike projections of the small intestine that recognize and select nutrients the body needs are called

villi

The main function of bile is to

emulsify fats

According to the principle of (BLANK), survival depends on body condition staying about the same

homeostasis

The term (BLANK) refers to diminished blood flow to the intestines

intestinal ischemia

All blood leaving the GI tract travels 1st to the

liver

The (BLANK) is a clear fluid that, from the GI tract, transports fat and fat soluble vitamins to the blood stream

lymph

The muscular contractions that move food through the GI tract is called

peristalsis