quiz 5

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

Answer 16

urobiliogen

Question 17

which area of the avian GIT is muscular for grinding and has a koilin lining for protection

Answer 17

ventriculus

Question 18

which type of gastroduodenal contraction allows digestia to flow into the duodenum and pushes digestia through the duodenum in birds?

Answer 18

thin ventricular waves

Question 19

which volatile fatty acid is produced in the highest amounts during rumen fermentation

Answer 19

acetate

Question 20

in which foregut compartment is hardware disease a major concern

Answer 20

reticulum

Question 21

what is the correct order of steps for ruminant nutrition

Answer 21

regurgitation, reinsalivation, remastication, and reswallowing

Question 22

when microfloria was out of the rumen, where will they be killed?

Answer 22

abomasum

Question 23

which type of vagal indigestion is associated with free gas bloat or failure to eructate

Answer 23

TYPE 1

Question 24

In general, how many chambers do non-ruminant foregut fermenters have in their stomach for pre-gastric fermentation?

Answer 24

2-4 chambers

Question 25

In hindgut fermenters using primarily the colon for fermentation, which type of contractions are particularly important for mixing and exposing the digesta to the mucosa for absorption of water and volatile fatty acids?

Answer 25

haustral contractions