GI tract True or False

Question 1

Food is contained in the gastrointestinal tract from the time of ingestion until it is completely digested and the waste prepared for elimination

Answer 1

True

Question 2

Some of the microbes that often invade the other organs of the body are rarely found in the stomach. The reason for this is the presence of HCl

Answer 2

True

Question 3

Certain cells found in the liver are responsible for removing bacteria and worn-out cells

Answer 3

True

Question 4

The pharyngeal-esophageal phase of swallowing is involuntary and is controlled by the swallowing center in the thalamus and lower pons

Answer 4

False

Question 5

All the chemical and mechanical phases of digestion from the mouth through the small intestine are directed toward changing food into forms that can pass through the epithelial cells lining the mucosa into the underlying blood and lymphatic vessels

Answer 5

True

Question 6

Pepsinogen is the precursor to the gastric enzyme for protein digestion and is secreted by the parietal cells

Answer 6

False

Question 7

The myenteric nerve plexus provides the major nerve supply to the GI tract wall and controls that GI motility

Answer 7

True

Question 8

The digestive function of the liver is to produce pepsinogen

Answer 8

False

Question 9

The pancreas has both an endocrine and an exocrine function

Answer 9

True

Question 10

The major stimulus for production of intestinal fluid is distension or irritation of the mucosa by hypertonic or acidic chyme

Answer 10

True

Question 11

Most nutrients are absorbed through the mucosa of the intestinal villi by active transport

Answer 11

True

Question 12

Fats significantly speed up the emptying of the stomach

Answer 12

False

Question 13

The colon is not essential for life

Answer 13

True

Question 14

The rectum has three valves, and the anus has two sphincters

Answer 14

True