VPHY 3100 Test 4: Hormonal and Homeostatic
Regulation
Functions of Digestive System - correct answer ✔✔Make ATP, Build Tissues,
Hydrolysis - correct answer ✔✔Breaking in Monomers
Where is Digestive Tract? - correct answer ✔✔outside body
Muscle layers of GI Tract - correct answer ✔✔Inner- Circular Outer- Longitudinal
Extrinsic Neural Regulation of GI - correct answer ✔✔Parasympathetic-
Stimulatory to Sacral Sympathetic- Inhibitory- stimulates sphincters
Intrinsic Neural Regulation of GI - correct answer ✔✔Submucosal and Myenteric
Plexi
Neural Regulation of GI (Length) - correct answer ✔✔Fast and short term
Hormonal Regulation of GI (Length) - correct answer ✔✔Slow and long lasting
Mastication - correct answer ✔✔chewing
,Deglutition - correct answer ✔✔Swallowing
Oral Phase of Swallowing - correct answer ✔✔Voluntary
Involuntary Phases of Swallowing - correct answer ✔✔Pharyngeal and Esophageal
Epiglottis - correct answer ✔✔flap that covers entrance to respiratory
Swallowing Center (Location) - correct answer ✔✔Medulla
Produces Peristalsis in Esophagus - correct answer ✔✔Distention of the wall by
Bolus
Peristaltic Wave in Esophagus - correct answer ✔✔wave muscle contraction-
contracts on oral side, relaxes on anal side
Goblet Cells - correct answer ✔✔Mucus
Parietal Cells - correct answer ✔✔Secrete HCl and Intrinsic Factor
Intrinsic Factor (IF) - correct answer ✔✔only essential function in stomach,
polypeptide that promotes absorption in the small intestine (ileum)
Chief Cells - correct answer ✔✔secrete pepsinogen
, Enterochromaffin-like cells (ECL) - correct answer ✔✔Histamine and Serotonin
G Cells - correct answer ✔✔Gastrin as GI Hormone
Cells in Gastric Gland (5) - correct answer ✔✔Goblet, Parietal, Chief, ECL,G
How Cl enters parietal cells - correct answer ✔✔from basolateral membrane,
enters against gradient by coupling with HCO3 via secondary active transport
What happens at apical membrane of Parietal Cells? - correct answer ✔✔H
secreted into lumen by primary active transport through proton pump, Cl secreted
through facilitated diffusion
Endocrine Stimulation of Gastric Acid Production - correct answer ✔✔Gastrin
from G cells, carried to parietal and ECL cells via blood
Neural Stimulation of Gastric Acid Production - correct answer ✔✔ACh from
parasympathetic stimulates parietal and ECL
Paracrine Stimulation of Gastric Acid Production - correct answer ✔✔Histamine
via H2R
Physical and Chemical Barriers of Stomach - correct answer ✔✔alkaline mucus
with HCO3 (protects against pepsin and acid)
Regulation
Functions of Digestive System - correct answer ✔✔Make ATP, Build Tissues,
Hydrolysis - correct answer ✔✔Breaking in Monomers
Where is Digestive Tract? - correct answer ✔✔outside body
Muscle layers of GI Tract - correct answer ✔✔Inner- Circular Outer- Longitudinal
Extrinsic Neural Regulation of GI - correct answer ✔✔Parasympathetic-
Stimulatory to Sacral Sympathetic- Inhibitory- stimulates sphincters
Intrinsic Neural Regulation of GI - correct answer ✔✔Submucosal and Myenteric
Plexi
Neural Regulation of GI (Length) - correct answer ✔✔Fast and short term
Hormonal Regulation of GI (Length) - correct answer ✔✔Slow and long lasting
Mastication - correct answer ✔✔chewing
,Deglutition - correct answer ✔✔Swallowing
Oral Phase of Swallowing - correct answer ✔✔Voluntary
Involuntary Phases of Swallowing - correct answer ✔✔Pharyngeal and Esophageal
Epiglottis - correct answer ✔✔flap that covers entrance to respiratory
Swallowing Center (Location) - correct answer ✔✔Medulla
Produces Peristalsis in Esophagus - correct answer ✔✔Distention of the wall by
Bolus
Peristaltic Wave in Esophagus - correct answer ✔✔wave muscle contraction-
contracts on oral side, relaxes on anal side
Goblet Cells - correct answer ✔✔Mucus
Parietal Cells - correct answer ✔✔Secrete HCl and Intrinsic Factor
Intrinsic Factor (IF) - correct answer ✔✔only essential function in stomach,
polypeptide that promotes absorption in the small intestine (ileum)
Chief Cells - correct answer ✔✔secrete pepsinogen
, Enterochromaffin-like cells (ECL) - correct answer ✔✔Histamine and Serotonin
G Cells - correct answer ✔✔Gastrin as GI Hormone
Cells in Gastric Gland (5) - correct answer ✔✔Goblet, Parietal, Chief, ECL,G
How Cl enters parietal cells - correct answer ✔✔from basolateral membrane,
enters against gradient by coupling with HCO3 via secondary active transport
What happens at apical membrane of Parietal Cells? - correct answer ✔✔H
secreted into lumen by primary active transport through proton pump, Cl secreted
through facilitated diffusion
Endocrine Stimulation of Gastric Acid Production - correct answer ✔✔Gastrin
from G cells, carried to parietal and ECL cells via blood
Neural Stimulation of Gastric Acid Production - correct answer ✔✔ACh from
parasympathetic stimulates parietal and ECL
Paracrine Stimulation of Gastric Acid Production - correct answer ✔✔Histamine
via H2R
Physical and Chemical Barriers of Stomach - correct answer ✔✔alkaline mucus
with HCO3 (protects against pepsin and acid)
