91.The maintenance of the body’s constant internal conditions is guided by which principle?

a.homeostasis

b.regularity

c.bioregulation

d.metabolic balance

92.Which 2 systems coordinate all digestive/absorptive processes?

a.enzyme and thoracic systems

b.portal and lymphatic systems

c.nervous and endocrine systems

d.transport and circulatory systems

93.What is the normal pH of stomach juice?

a.0.25–0.50

b.1.5–1.7

c.7.0–7.5

d.9.5–9.75

94.Which of the following hormones regulates the pH of the stomach?

a.gastrin

b.insulin

c.secretin

d.cholecystokinin

95.Which of the following substances functions to control the release of hydrochloric acid to prevent excessive acidity?

a.fibre

b.gastrin

c.secretin

d.bicarbonate

96.Which of the following substances stimulates the pancreas to release bicarbonate-rich juice?

a.gastrin

b.secretin

c.glucagon

d.gastric-inhibitory peptide

97.Which of the following plays the largest role in regulating the release of pancreatic digestive enzymes?

a.the hormone gastrin.

b.the pancreatic sphincter.

c.the amount of fat, protein or carbohydrate in chyme

d.the release of digestive enzymes by the pancreas remains constant and is not affected by external or internal factors.

98.Which of the following are all enterogastrone hormones?

a.gastric inhibitory peptide, secretin and bicarbonate

b.gastric inhibitory peptide, secretin and cholecystokinin

c.gastric inhibitory peptide, bicarbonate and gastrin

d.gastric inhibitory peptide, cholecystokinin and zymogen

99.What is the first vessel to receive absorbed water-soluble vitamins?

a.hepatic vein

b.mesenteric vein

c.mesenteric artery

d.hepatic portal vein

100.What is/are the primary target organ(s) for the action of cholecystokinin?

a.pancreas only

b.pancreas and stomach

c.pancreas and duodenum

d.pancreas and gallbladder