BIOL II: HW Ch. 23
T/F: Another term for swallowing is deglutition.
True
T/F: Most nutrients are absorbed through the mucosa of the intestinal villi by active transport.
True
T/F: The digestive function of the liver is to produce bile.
True
A fluid secreted into the small intestine during digestion that contains cholesterol, emulsification agents, and phospholipids is ________. a. Bile b. Intestinal juice c. Pancreatic juice d. Gastric juice
a. Bile
Short-chain triglycerides found in foods such as butterfat molecules in milk are split by a specific enzyme in preparation for absorption. Which of the following enzymes is responsible? a. Lipase b. Rennin c. Cholecystokinin d. Pepsin
a. Lipase
The ingestion of a meal high in fat content would cause which of the following to occur? a. The acid secretions from the stomach would be sufficient to digest this food. b. Bile would be released from the gallbladder to emulsify the fat in the duodenum c. Severe indigestion would occur, caused by the lack of sufficient digestive enzymes d. This type of food would cause secretion of gastrin to cease, causing digestive upset.
b. Bile would be released from the gallbladder to emulsify the fat in the duodenum
Which of the following is not characteristic of the large intestine? It ________. a. Exhibits external muscular bands called teniae coli b. Has pocket-like sacs called haustra c. Is longer than the small intestine d. Does not contain villi
c. Is longer than the small intestine
The function of the goblet cells is to ________. a. Absorb nutrients from digested food and store them for future use b. Secrete buffers in order to keep the pH of the digestive tract close to neutral c. Produce mucus that protects parts of the digestive organs from the effects of powerful enzymes needed for food digestion d. Provide protection against invading bacteria and other disease-causing organisms that enter the digestive tract in food
c. Produce mucus that protects parts of the digestive organs from the effects of powerful enzymes needed for food digestion
Paneth cells ________. a. Secrete digestive enzymes b. Secrete hormones c. Secrete enzymes that kill bacteria d. Secrete bicarbonate ions
c. Secrete enzymes that kill bacteria
What stomach secretion is necessary for normal hemoglobin production in RBCs? a. HCI b. Gastric lipase c. Pepsinogen d. Intrinsic factor
d. Intrinsic factor