Chapter 17- Digestive System

Poor vision

Vitamin A

8.Gallstones are usually composed of

1.cholesterol.

13.Enlarged blood vessels of the anal columns are called

1.hemorrhoids.

12.The mechanical breakup of food particles in the mouth is called

1.mastication.

9.Activities of the digestive system generally increase when it is stimulated by

1.parasympathetic impulses

23.What stimulates the secretion of hydrochloric acid (HCl) in the stomach?

All is correct a.the smell of food b.the taste of food c.the distention of the stomach

21.Which of the following is true about bile?

Bile is produced by the liver.

24.Secretin

Peptide hormone that stimulates the release of pancreatic juice and inhibits stomach secretions

22.Matthew takes a drug that inhibits the production of HCl in the stomach to ease the symptoms of a gastric ulcer. If he takes it for a long time, digestion of which nutrient would be affected the most?

Proteins (gastric juices produces PEPSIN)

From external to internal, what is the correct order of layers of the stomach?

Serosa, muscularis, submucosa, mucosa

Which two fetal remnants are found on the liver?

The round ligament and the ligamentum venosum

Weakened bones

Vitamin D

Impaired blood clotting

Vitamin K

Slower healing and decrease immunity

Zinc

14.Pancreatic digestive secretions are regulated by

cholecystokinin.

26.When chyme enters the duodenum,

gastric secretions DO NOT increase. (The acidic chyme in the duodenum stimulates hormonal and neural mechanisms that inhibit gastric secretions).

25.What stimulates the release of secretin from the duodenum?

hydrochloric acid in chyme. (to inhibit stomach secretions of acidic juices)

3.Portal Triad - A portal triad consists of which three elements?

i.Branches of a hepatic artery, hepatic portal vein, and bile duct

Gastrin, which stomach cells secrete,

increases secretion by the gastric glands

16.During the defecation reflex, the diaphragm

is lowered

18.The liver forms glucose from

noncarbohydrates

17.Peristalsis occurs in the digestive tract from the

pharynx to the anus.

20.The greater omentum is composed of

the peritoneal membrane.

7.The root canal of a tooth contains

.4.blood vessels and nerves.

19.Which of the following is the correct sequence for the digestion and absorption of lipids?

1. Formation of chylomicrons2. Emulsification by bile3. Dissolved in the epithelial cell membrane4. Hydrolysis by pancreatic lipase5. Movement into lacteal ducts

11.VLDL molecules are produced in which organ?

1.Liver

4.Gastric secretion during the intestinal phase is inhibited by the...

1.Presence of lipids or low pH i.(Gastric secretion can be inhibited by either the presence of lipids or a low pH (less than 2.0)

10.One of the functions of the large intestine is to

1.absorb ingested water

5.Over-the-counter antacids usually include

1.agents that lower the pH in the stomach.2..

15.Because of their location, swollen palatine tonsils may interfere with

1.both breathing and swallowing.