Bio 150 Chapter 9 – Flashcards

Pepsin is an enzyme that digests proteins at acidic pH. Therefore, it must act in the stomach. small intestine. mouth. large intestine. esophagus.

A serious genetic disorder known as hemochromatosis is often called the rusty organ disease and affects nearly 1.5 million Americans. The disorder causes increased absorption of intestinal iron. Which organ is responsible for iron homeostasis? brain lungs liver gallbladder spleen

The process that pushes food through the esophagus is called peritoneum. periosteum. peristalsis. perineum. peridontal.

Which accessory organ of the digestive system will process and store nutrients as well as producing bile for emulsification? liver gallbladder pancreas stomach small intestine

Which of the following is not a function of the liver? It helps regulate blood cholesterol levels. It secretes digestive enzymes into the small intestine. It removes iron and certain vitamins from the blood and stores them. It removes poisonous substances from the blood and detoxifies them. It produces bile.

The fleshy extension of the soft palate is known as the epiglottis. uvula. pharynx. adenoid. cecum.

The major portions of the large intestine include the duodenum, cecum, and rectum. the jejunum, colon, and anus. the cecum, colon, rectum, and anus. the colon, duodenum, cecum, and rectum. the colon, anus, duodenum, and jejunum.

The primary function of the stomach is to break down fats. store food, churn, and begin digestion. absorb major nutrients. package feces. eliminate water and tissue fluid.

Which of the enzyme-substrate pairings is incorrect? Nuclease-DNA Lipase-fat Pepsin-protein Amylase-starch Trypsin-carbohydrates

Small growths arising from the epithelial lining of the colon are called cysts. villi. polyps. lacteals. wheals.

A deficiency in which mineral leads to thyroid deficiency? iodine copper zinc selenium manganese

Which of the following is not associated with the stomach? alcohol absorption gastric glands rugae duodenum pepsin

Muscles that encircle tubes and act as circular valves are called frenula. sphincters. cannula. anastomoses. buccinators.

About 90% of people suffering from anorexia nervosa are young men. older women. young women. older men. seniors

What serves as an emulsifying agent for fats in the small intestine? lipase bile amylase pepsin maltase

A diet rich in what vitamins may reduce the chance of free radicals that can cause health problems? C and B12 C, E, and A D and C D, C, and E B12, C, and E

Which of the following is not a function of the digestive system? to ingest food to digest food into small nutrients so that the molecules can pass through membranes to absorb nutrient molecules to eliminate indigestible remains to protect against pathogens

Today, physicians and dentists are concerned that gum disease is linked to ___________. neurological disorders peritonitis vitamin deficiencies cardiovascular disease asthma

Which of the following will not reduce dietary lipids? Remove skin from poultry. Broil rather than fry. Use butter instead of herbs and spices. Use lemon juice instead of salad dressing. Avoid packaged foods that contain hydrogenated fats.

Which of the following is not associated with the small intestine? many villi gastric pits brush border enzymes lacteals bile and lipase