quiz 5 2023

Question 1

which ganglia in the enteric nervous system is located between the submucosa and circular muscle?

Answer 1

meissners plexus

Question 2

which neuromodulator causes relaxation of smooth muscle and increases intestinal secretions?

Answer 2

vasoactive intestinal peptide

Question 3

which route does a hormone take to reach its target tissue?

Answer 3

travels through the bloodstream

Question 4

which substance is a GI paracrine involved in stimulating hydrogen ion secretion by gastric parietal cells?

Answer 4

histamine

Question 5

a secondary peristaltic wave moves the bolus to the stomach after it enters the esophagus?

Answer 5

false

Question 6

which substance is secreted in higher concentrations at high rates of saliva production?

Answer 6

HCO3-

Question 7

what is secreted by mucous neck cells in the oxyntic glands of the stomach

Answer 7

mucous

Question 8

what substances form the barrier to damage by acid and pepsin in the gastric mucosa?

Answer 8

bicarbonate
mucous

Question 9

which portion of pancreatic secretions is stimulated by the product of digestion?

Answer 9

enzymatic

Question 10

what substance is bile function to emulsify lipids for digestion and assist in absorbing lipid product of digestion?

Answer 10

bile salts

Question 11

how are glucose, galactose, and fructose absorbed from the enterocyte into the blood?

Answer 11

GLUT 2

Question 12

which enzyme is released by the pancreas and is an endopeptidase?

Answer 12

chymotrypsin

Question 13

how is free iron transported from the enterocyte into blood?

Answer 13

ferroportin

Question 14

which hormone influences sodium absorption and potassium secretion in cells of the colon?

Answer 14

aldosterone

Question 15

which substance is secreted in exchange for chloride absorption in enterocytes of the ileum?

Answer 15

HCO3-

Question 16

what form of deconjugated bilirubin can return to the liver from the terminal ileum?

Answer 16

urobiliogen