NURS 5315 Exam 5: Advanced
Pathophysiology | Questions & Complete
Detailed Solutions (New 2026/2027
Update) UTA
This NURS 5315 (Advanced Pathophysiology) Exam 5 tests clinical concepts related to the
Renal, Reproductive, and Gastrointestinal (GI) systems. The extensive 180-question and
answer set is compiled by nursing students to cover both normal and abnormal physiological
functions.
This comprehensive exam description and study focus includes:
1. Renal and Reproductive Systems
• Renal Physiology & Patho: Covers the components and functions of nephrons
(Glomerulus, Proximal Tubule, Loop of Henle, Distal Tubule, Collecting Duct). It tests
on Glomerular Filtration Rate (GFR) and kidney hormones (Renin, ADH, Aldosterone,
Calcitriol).
• Renal Pathologies: Tests your knowledge of glomerulonephritis (focal, diffuse,
proliferative), nephrotic syndrome, and types of renal stones (calcium, struvite, uric
acid).
• Reproductive Pathologies: Covers various reproductive tract disorders and
hormone dysregulations.
2. Gastrointestinal (GI) System
• Upper and Lower GI: Questions trace the GI tract and its functions, including normal
aging changes to gut motility and taste buds.
• Digestive Diseases: Focuses on gastroesophageal reflux disease (GERD), gastritis,
peptic ulcer disease, functional dysphagia, and intussusception.
• Liver & Biliary Disorders: Covers portal hypertension, the progression of cirrhosis
via stellate cells, ascites mechanisms, and causes of acute liver failure.
Q1. Which trio of sphincters are specifically named in the source text as being
part of the GI tract? [Multiple Choice]
1
, A) Esophageal sphincter, pyloric sphincter, ileocecal sphincter.
B) Lower esophageal sphincter, pyloric sphincter, external anal sphincter
C) Pyloric sphincter, ileocecal sphincter, internal anal sphincter
D) Esophageal sphincter, pyloric sphincter, ureterovesical sphincter
Answer: Esophageal sphincter, pyloric sphincter, ileocecal sphincter.
Explanation: The source explicitly names three GI sphincters: the esophageal sphincter
(separates esophagus and stomach), the pyloric sphincter (separates stomach and small
intestine), and the ileocecal sphincter (separates small intestine and large intestine). Distractors
explained: "Lower esophageal, pyloric, external anal sphincter" is incorrect because the source
does not list the external anal sphincter among the named sphincters. "Pyloric, ileocecal, internal
anal sphincter" is wrong because the internal anal sphincter is not one of the three specified.
"Esophageal, pyloric, ureterovesical sphincter" is incorrect because the ureterovesical sphincter
relates to the urinary tract, not the GI tract.
Q2. Which set lists the organs of the upper gastrointestinal (GI) tract as
described in the source? [Multiple Choice]
A) Mouth/oral cavity, pharynx, esophagus, stomach, duodenum.
B) Mouth, esophagus, stomach, ileum, colon
C) Nasal cavity, pharynx, esophagus, stomach, jejunum
D) Oral cavity, larynx, esophagus, stomach, duodenum
Answer: Mouth/oral cavity, pharynx, esophagus, stomach, duodenum.
Explanation: The upper GI tract includes the organs that receive and begin processing ingested
food: the mouth (oral cavity) and pharynx for intake and initial mechanical/enzymatic
breakdown, the esophagus for transport, the stomach for acid/protein digestion, and the
duodenum as the proximal small bowel that continues digestion. Distractors explained: "Mouth,
esophagus, stomach, ileum, colon" is wrong because the ileum and colon are distal lower-GI
organs. "Nasal cavity, pharynx, esophagus, stomach, jejunum" is wrong because the nasal cavity
is not part of the GI tract and the jejunum is downstream of the duodenum. "Oral cavity, larynx,
esophagus, stomach, duodenum" is wrong because the larynx is part of the airway, not the
digestive tract.
Q3. Which illustration would best teach the microstructure that enables nutrient
absorption in the small intestine as described in the source? [Multiple Choice]
A) A cross-sectional villus showing enterocytes with brush border microvilli, goblet
cells, central lacteal, and capillary network with opposite-direction blood flow.
2
, B) A flat epithelial sheet with scattered goblet cells and no central lacteal depicted
C) Only a diagram of colon crypts without microvilli or lacteals shown
D) An abdomen cross-section labeling organs but not showing villus microstructure
Answer: A cross-sectional villus showing enterocytes with brush border microvilli, goblet
cells, central lacteal, and capillary network with opposite-direction blood flow.
Explanation: An educational diagram of an intestinal villus should display absorptive enterocytes
topped by microvilli (brush border) to show how surface area increases absorption, goblet cells
secreting mucus, a central lacteal for fat transport, and nearby arterial and venous capillaries
with opposite flow to illustrate close countercurrent blood flow. Distractors explained: "A flat
epithelial sheet with scattered goblet cells and no lacteal" omits key three-dimensional villus
structures and microvilli so it would not illustrate absorption mechanisms. "Only a diagram of the
colon crypts without microvilli or lacteals" is incorrect because colon crypts lack the small-
intestine villus structures central to nutrient absorption. "An entire abdomen cross-section
labeling organs but not showing microstructure" is wrong because it would not demonstrate
villus/enterocyte microanatomy needed for absorption understanding.
Q4. Explain the pathophysiology of slow-transit (primary) constipation. [Short
Answer]
Answer: Slow-transit (primary) constipation is caused by decreased colonic motility,
producing infrequent defecation and accumulation of stool in the sigmoid colon; this
reduced transit time leads to hard, difficult-to-pass stools and straining.
Explanation: This asks for the single concept of slow-transit constipation. A complete answer
defines it as a primary form characterized by slow, infrequent defecation with stool accumulation
in the sigmoid colon and links that pathophysiology to the typical clinical manifestations
(infrequency, straining, hard stools) described in the source.
Q5. According to the source, where does most digestion and absorption take
place? [Multiple Choice]
A) Small intestine
B) Stomach
C) Large intestine
D) Esophagus
Answer: Small intestine
Explanation: Most digestion and absorption occur in the small intestine because it provides the
enzymatic activity and large surface area (villi and microvilli) needed to break down and absorb
nutrients. Distractors explained: "Stomach" is incorrect because the stomach primarily performs
3
, mechanical and some chemical digestion (proteins), not the majority of absorption. "Large
intestine" is wrong because the colon mainly absorbs water and electrolytes, not most nutrients.
"Esophagus" is incorrect because it is a transport tube with no significant digestion or
absorption.
Q6. Which four actions are listed as the basic functions of the gastrointestinal
system? [Multiple Choice]
A) Digestion, absorption, motility, and secretion.
B) Digestion, filtration, motility, and secretion
C) Digestion, absorption, respiration, and secretion
D) Absorption, excretion, motility, and filtration
Answer: Digestion, absorption, motility, and secretion.
Explanation: The GI system performs four core actions: digestion (breaking down food),
absorption (taking up nutrients into the body), motility (moving contents along the tract), and
secretion (adding enzymes, acid, mucus). Distractors explained: "Digestion, filtration, motility,
and secretion" is incorrect because filtration is not a primary GI function. "Digestion, absorption,
respiration, and secretion" is wrong because respiration is a respiratory function, not GI.
"Absorption, excretion, motility, and filtration" is incorrect because excretion and filtration are
not the four basic GI actions listed; digestion and secretion are missing.
Q7. What is a villus and how does its vascular arrangement support absorption?
[Short Answer]
Answer: Villi are small finger-like projections of the intestinal mucosa that increase
absorptive surface area; because arterial and venous vessels lie very close together
within each villus and blood flows in opposite directions, nutrient transfer from lumen to
blood is facilitated.
Explanation: This focuses on the single concept of how villus structure supports absorption. A
complete answer names villi as projections that increase surface area and notes the close
proximity and opposite directionality of vessels within villi as described in the source, linking
these structural features to improved nutrient uptake.
Q8. Explain the role of sphincters in gastrointestinal function. [Short Answer]
Answer: Sphincters are rings of muscle that close off compartments in the GI tract; by
regulating opening and closing they control the movement (motility) of food between
segments and help retain luminal contents long enough for optimal nutrient absorption.
Explanation: This tests understanding of a sphincter’s functional role rather than its name. A
complete answer gives the structural identity (muscle that closes compartments) and links that
4
Pathophysiology | Questions & Complete
Detailed Solutions (New 2026/2027
Update) UTA
This NURS 5315 (Advanced Pathophysiology) Exam 5 tests clinical concepts related to the
Renal, Reproductive, and Gastrointestinal (GI) systems. The extensive 180-question and
answer set is compiled by nursing students to cover both normal and abnormal physiological
functions.
This comprehensive exam description and study focus includes:
1. Renal and Reproductive Systems
• Renal Physiology & Patho: Covers the components and functions of nephrons
(Glomerulus, Proximal Tubule, Loop of Henle, Distal Tubule, Collecting Duct). It tests
on Glomerular Filtration Rate (GFR) and kidney hormones (Renin, ADH, Aldosterone,
Calcitriol).
• Renal Pathologies: Tests your knowledge of glomerulonephritis (focal, diffuse,
proliferative), nephrotic syndrome, and types of renal stones (calcium, struvite, uric
acid).
• Reproductive Pathologies: Covers various reproductive tract disorders and
hormone dysregulations.
2. Gastrointestinal (GI) System
• Upper and Lower GI: Questions trace the GI tract and its functions, including normal
aging changes to gut motility and taste buds.
• Digestive Diseases: Focuses on gastroesophageal reflux disease (GERD), gastritis,
peptic ulcer disease, functional dysphagia, and intussusception.
• Liver & Biliary Disorders: Covers portal hypertension, the progression of cirrhosis
via stellate cells, ascites mechanisms, and causes of acute liver failure.
Q1. Which trio of sphincters are specifically named in the source text as being
part of the GI tract? [Multiple Choice]
1
, A) Esophageal sphincter, pyloric sphincter, ileocecal sphincter.
B) Lower esophageal sphincter, pyloric sphincter, external anal sphincter
C) Pyloric sphincter, ileocecal sphincter, internal anal sphincter
D) Esophageal sphincter, pyloric sphincter, ureterovesical sphincter
Answer: Esophageal sphincter, pyloric sphincter, ileocecal sphincter.
Explanation: The source explicitly names three GI sphincters: the esophageal sphincter
(separates esophagus and stomach), the pyloric sphincter (separates stomach and small
intestine), and the ileocecal sphincter (separates small intestine and large intestine). Distractors
explained: "Lower esophageal, pyloric, external anal sphincter" is incorrect because the source
does not list the external anal sphincter among the named sphincters. "Pyloric, ileocecal, internal
anal sphincter" is wrong because the internal anal sphincter is not one of the three specified.
"Esophageal, pyloric, ureterovesical sphincter" is incorrect because the ureterovesical sphincter
relates to the urinary tract, not the GI tract.
Q2. Which set lists the organs of the upper gastrointestinal (GI) tract as
described in the source? [Multiple Choice]
A) Mouth/oral cavity, pharynx, esophagus, stomach, duodenum.
B) Mouth, esophagus, stomach, ileum, colon
C) Nasal cavity, pharynx, esophagus, stomach, jejunum
D) Oral cavity, larynx, esophagus, stomach, duodenum
Answer: Mouth/oral cavity, pharynx, esophagus, stomach, duodenum.
Explanation: The upper GI tract includes the organs that receive and begin processing ingested
food: the mouth (oral cavity) and pharynx for intake and initial mechanical/enzymatic
breakdown, the esophagus for transport, the stomach for acid/protein digestion, and the
duodenum as the proximal small bowel that continues digestion. Distractors explained: "Mouth,
esophagus, stomach, ileum, colon" is wrong because the ileum and colon are distal lower-GI
organs. "Nasal cavity, pharynx, esophagus, stomach, jejunum" is wrong because the nasal cavity
is not part of the GI tract and the jejunum is downstream of the duodenum. "Oral cavity, larynx,
esophagus, stomach, duodenum" is wrong because the larynx is part of the airway, not the
digestive tract.
Q3. Which illustration would best teach the microstructure that enables nutrient
absorption in the small intestine as described in the source? [Multiple Choice]
A) A cross-sectional villus showing enterocytes with brush border microvilli, goblet
cells, central lacteal, and capillary network with opposite-direction blood flow.
2
, B) A flat epithelial sheet with scattered goblet cells and no central lacteal depicted
C) Only a diagram of colon crypts without microvilli or lacteals shown
D) An abdomen cross-section labeling organs but not showing villus microstructure
Answer: A cross-sectional villus showing enterocytes with brush border microvilli, goblet
cells, central lacteal, and capillary network with opposite-direction blood flow.
Explanation: An educational diagram of an intestinal villus should display absorptive enterocytes
topped by microvilli (brush border) to show how surface area increases absorption, goblet cells
secreting mucus, a central lacteal for fat transport, and nearby arterial and venous capillaries
with opposite flow to illustrate close countercurrent blood flow. Distractors explained: "A flat
epithelial sheet with scattered goblet cells and no lacteal" omits key three-dimensional villus
structures and microvilli so it would not illustrate absorption mechanisms. "Only a diagram of the
colon crypts without microvilli or lacteals" is incorrect because colon crypts lack the small-
intestine villus structures central to nutrient absorption. "An entire abdomen cross-section
labeling organs but not showing microstructure" is wrong because it would not demonstrate
villus/enterocyte microanatomy needed for absorption understanding.
Q4. Explain the pathophysiology of slow-transit (primary) constipation. [Short
Answer]
Answer: Slow-transit (primary) constipation is caused by decreased colonic motility,
producing infrequent defecation and accumulation of stool in the sigmoid colon; this
reduced transit time leads to hard, difficult-to-pass stools and straining.
Explanation: This asks for the single concept of slow-transit constipation. A complete answer
defines it as a primary form characterized by slow, infrequent defecation with stool accumulation
in the sigmoid colon and links that pathophysiology to the typical clinical manifestations
(infrequency, straining, hard stools) described in the source.
Q5. According to the source, where does most digestion and absorption take
place? [Multiple Choice]
A) Small intestine
B) Stomach
C) Large intestine
D) Esophagus
Answer: Small intestine
Explanation: Most digestion and absorption occur in the small intestine because it provides the
enzymatic activity and large surface area (villi and microvilli) needed to break down and absorb
nutrients. Distractors explained: "Stomach" is incorrect because the stomach primarily performs
3
, mechanical and some chemical digestion (proteins), not the majority of absorption. "Large
intestine" is wrong because the colon mainly absorbs water and electrolytes, not most nutrients.
"Esophagus" is incorrect because it is a transport tube with no significant digestion or
absorption.
Q6. Which four actions are listed as the basic functions of the gastrointestinal
system? [Multiple Choice]
A) Digestion, absorption, motility, and secretion.
B) Digestion, filtration, motility, and secretion
C) Digestion, absorption, respiration, and secretion
D) Absorption, excretion, motility, and filtration
Answer: Digestion, absorption, motility, and secretion.
Explanation: The GI system performs four core actions: digestion (breaking down food),
absorption (taking up nutrients into the body), motility (moving contents along the tract), and
secretion (adding enzymes, acid, mucus). Distractors explained: "Digestion, filtration, motility,
and secretion" is incorrect because filtration is not a primary GI function. "Digestion, absorption,
respiration, and secretion" is wrong because respiration is a respiratory function, not GI.
"Absorption, excretion, motility, and filtration" is incorrect because excretion and filtration are
not the four basic GI actions listed; digestion and secretion are missing.
Q7. What is a villus and how does its vascular arrangement support absorption?
[Short Answer]
Answer: Villi are small finger-like projections of the intestinal mucosa that increase
absorptive surface area; because arterial and venous vessels lie very close together
within each villus and blood flows in opposite directions, nutrient transfer from lumen to
blood is facilitated.
Explanation: This focuses on the single concept of how villus structure supports absorption. A
complete answer names villi as projections that increase surface area and notes the close
proximity and opposite directionality of vessels within villi as described in the source, linking
these structural features to improved nutrient uptake.
Q8. Explain the role of sphincters in gastrointestinal function. [Short Answer]
Answer: Sphincters are rings of muscle that close off compartments in the GI tract; by
regulating opening and closing they control the movement (motility) of food between
segments and help retain luminal contents long enough for optimal nutrient absorption.
Explanation: This tests understanding of a sphincter’s functional role rather than its name. A
complete answer gives the structural identity (muscle that closes compartments) and links that
4
