Exam 14: The Urinary System

Which of these secretions is entirely under nervous control and has no hormonal regulatory component?

Match the hormone(s), labelled a. through d., to the descriptions. (Options may be used more than once or not at all.) a.both secretin and CCK b.secretin c.CCK d.gastrin -stimulate(s) gastric secretion

Match the gastric cell types, labelled a. through d., with the correct characteristics. (Options may be used more than once or not at all.) a.chief cells b.parietal cells c.mucous cells d.G cells of PGA -secrete HCl

Upon arrival of a new meal in the stomach, the gastrocolic reflex pushes the colonic contents into the rectum, triggering the defecation reflex to eliminate the remains of a preceding meal.

Which of these actions is NOT performed by the liver?

Gastric secretion occurs only when food is present in the stomach.

Which of the following is NOT a function of saliva?

The ultimate source of the fluids secreted into the digestive tract is the plasma.

Haustral contractions propel the feces one-third to three-quarters the length of the colon in a few seconds.

Match the descriptions, labelled a. through l., with the items listed. a.secretes NaHCO₃ b.enzyme for protein digestion secreted by pancreas c.activates pepsinogen d.enzyme for fat digestion e.functions inside brush border f.secretes gastrin g.stimulates parietal and chief cells h.enzyme for carbohydrate digestion that functions primarily in the body of the stomach i.secreted by chief cells j.secretes pancreatic enzymes k.secreted by duodenal cells in response to the presence of acid l.stimulates pancreatic acinar cells -trypsin(ogen)

Colonic secretion consists of a(n) ____________________ solution.

The swallowing centre does not initiate and coordinate secondary peristaltic waves.

Match the digestive secretions, labelled a. through e., to the descriptions. (Options may be used more than once or not at all.) a.bile salts b.pepsin(ogen) c.amylase d.lipase e.trypsin(ogen) -carbohydrate digestion is completed

The rate of gastric emptying is influenced by factors both in the stomach and in the duodenum.

The myenteric plexus is a nerve network located in the submucosa.

Match the hormones, labelled a. through e., with the actions listed. a.gastrin b.secretin c.CCK d.gastric inhibitory peptide e.histamine -relaxes the ileocecal sphincter

Parasympathetic stimulation of the salivary glands produces a large volume of watery saliva high in enzyme concentration.

The ____________________ is the longest segment of the small intestine.

Match the gastric cell types, labelled a. through d., with the correct characteristics. (Options may be used more than once or not at all.) a.chief cells b.parietal cells c.mucous cells d.G cells of PGA -serve as parent cells of all new cells of the gastric mucosa

Which of these statements does NOT describe the formation of a lipid emulsion?