WGU D115 Objective Assessment Advanced
Pathophysiology Comprehensive Resource To
Help You Ace 2026-2027 Includes Frequently
Tested Questions With ELABORATED 100%
Correct COMPLETE SOLUTIONS
Guaranteed Pass First Attempt!!
Current Update!!
1. Which type of nerve fibers stimulate the salivary glands?
A. Adrenergic fibers
B. Serotonergic fibers
C. Cholinergic fibers
D. Dopaminergic fibers
Correct Answer: C. Cholinergic fibers
Explanation: Salivary gland secretion is primarily stimulated by parasympathetic
cholinergic fibers using acetylcholine.
2. Which part of the esophagus is innervated by nerve fibers?
A. Upper third only
B. Middle third only
C. Lower third
D. Entire esophagus is not innervated
Correct Answer: C. Lower third
Explanation: The lower third of the esophagus consists of smooth muscle and is
innervated by autonomic nerve fibers.
,3. Which artery supplies blood to the stomach?
A. Superior mesenteric artery
B. Inferior mesenteric artery
C. Celiac artery
D. Renal artery
Correct Answer: C. Celiac artery
Explanation: The celiac artery supplies blood to the stomach, liver, spleen, and
upper duodenum.
4. Which hormone inhibits stomach contractions?
A. Gastrin
B. Secretin
C. Cholecystokinin (CCK)
D. Motilin
Correct Answer: B. Secretin
Explanation: Secretin inhibits gastric motility and acid secretion while stimulating
pancreatic bicarbonate release.
5. Which hormone increases gastric motility and acid production?
A. Secretin
B. Somatostatin
C. Gastrin
D. Insulin
Correct Answer: C. Gastrin
Explanation: Gastrin increases stomach contractions and stimulates acid secretion
from G-cells in the antrum, duodenum, and pancreas.
, 6. Which stomach cells secrete hydrochloric acid and intrinsic factor?
A. Chief cells
B. Parietal cells
C. G-cells
D. Mucous cells
Correct Answer: B. Parietal cells
Explanation: Parietal cells secrete hydrochloric acid and intrinsic factor, which is
necessary for vitamin B12 absorption. Deficiency leads to pernicious anemia.
7. Which enzyme cleaves fatty acids from phospholipids?
A. Lipase
B. Amylase
C. Phospholipase
D. Protease
Correct Answer: C. Phospholipase
Explanation: Phospholipase breaks down phospholipids by cleaving fatty acids.
8. Which enzyme removes terminal (end) amino acids from ingested proteins?
A. Pepsin
B. Trypsin
C. Carboxypeptidase
D. Lipase
Correct Answer: C. Carboxypeptidase
Explanation: Carboxypeptidase acts at the carboxyl end of peptides, releasing
individual amino acids.
9. Which statement about unconjugated bilirubin is correct?
Pathophysiology Comprehensive Resource To
Help You Ace 2026-2027 Includes Frequently
Tested Questions With ELABORATED 100%
Correct COMPLETE SOLUTIONS
Guaranteed Pass First Attempt!!
Current Update!!
1. Which type of nerve fibers stimulate the salivary glands?
A. Adrenergic fibers
B. Serotonergic fibers
C. Cholinergic fibers
D. Dopaminergic fibers
Correct Answer: C. Cholinergic fibers
Explanation: Salivary gland secretion is primarily stimulated by parasympathetic
cholinergic fibers using acetylcholine.
2. Which part of the esophagus is innervated by nerve fibers?
A. Upper third only
B. Middle third only
C. Lower third
D. Entire esophagus is not innervated
Correct Answer: C. Lower third
Explanation: The lower third of the esophagus consists of smooth muscle and is
innervated by autonomic nerve fibers.
,3. Which artery supplies blood to the stomach?
A. Superior mesenteric artery
B. Inferior mesenteric artery
C. Celiac artery
D. Renal artery
Correct Answer: C. Celiac artery
Explanation: The celiac artery supplies blood to the stomach, liver, spleen, and
upper duodenum.
4. Which hormone inhibits stomach contractions?
A. Gastrin
B. Secretin
C. Cholecystokinin (CCK)
D. Motilin
Correct Answer: B. Secretin
Explanation: Secretin inhibits gastric motility and acid secretion while stimulating
pancreatic bicarbonate release.
5. Which hormone increases gastric motility and acid production?
A. Secretin
B. Somatostatin
C. Gastrin
D. Insulin
Correct Answer: C. Gastrin
Explanation: Gastrin increases stomach contractions and stimulates acid secretion
from G-cells in the antrum, duodenum, and pancreas.
, 6. Which stomach cells secrete hydrochloric acid and intrinsic factor?
A. Chief cells
B. Parietal cells
C. G-cells
D. Mucous cells
Correct Answer: B. Parietal cells
Explanation: Parietal cells secrete hydrochloric acid and intrinsic factor, which is
necessary for vitamin B12 absorption. Deficiency leads to pernicious anemia.
7. Which enzyme cleaves fatty acids from phospholipids?
A. Lipase
B. Amylase
C. Phospholipase
D. Protease
Correct Answer: C. Phospholipase
Explanation: Phospholipase breaks down phospholipids by cleaving fatty acids.
8. Which enzyme removes terminal (end) amino acids from ingested proteins?
A. Pepsin
B. Trypsin
C. Carboxypeptidase
D. Lipase
Correct Answer: C. Carboxypeptidase
Explanation: Carboxypeptidase acts at the carboxyl end of peptides, releasing
individual amino acids.
9. Which statement about unconjugated bilirubin is correct?
