PORTAGE BIOD 151 MODULE 3 EXAM QUESTIONS & ANSWERS 2026-2027 | COMPLETE STUDY … EXAM
P R O F E S S I O N A L P R A C T I C E M AT E R I A L S
Portage BIOD 151 Module 3 Exam
Questions & Answers 2026-2027 |
Complete Study Guide | Verified
Practice Test (Rationales)
Verified Answers Exam Ready With Rationales
22 QUESTIONS
DOCUMENT OVERVIEW
This document contains 22 verified exam questions with correct answers and detailed rationales, focusing
on the topic of human digestion and physiology. It provides students with a comprehensive resource for
studying and reviewing key concepts within this subject area, ensuring a thorough understanding of the
material. This study guide is ideal for exam preparation and certification review, offering clear explanations
to enhance learning and retention.
E XA M Q U EST I O N S
Q1 QUESTION 1 OF 22
Explain why someone who has hypergastrinemia (excessive secretion of gastrin) might develop gastric/stomach ulcers.
CORRECT ANSWER
Gastrin stimulates the secretions of pepsinogens and hydrochloric acid. Excess
amounts would lead to erosion of the stomach lining.
Page 1
, RATIONALE
Elevated gastrin levels increase the secretion of hydrochloric acid and pepsinogens, leading to excessive gastric acidity and proteolytic
activity, which can erode the gastric mucosa and result in ulcer formation. This pathophysiological mechanism highlights the direct
correlation between hypergastrinemia and gastric ulcer development.
Q2 QUESTION 2 OF 22
Explain in detail how the stomach contents enter the small intestine
CORRECT ANSWER
The pyloric sphincter (valve), located at the base of the stomach, relaxes causing
a small quantity of chyme to pass through the opening into the first part of the
small intestine.
This initiates a reflex that causes the muscles of the sphincter to contract and
close the opening temporarily. Then the sphincter relaxes again and allows more
chyme to enter.
RATIONALE
The pyloric sphincter regulates the flow of chyme from the stomach to the duodenum by alternating between relaxation and contraction,
facilitating a controlled release of partially digested food while preventing backflow. This sphincter action is critical for maintaining
digestive efficiency and ensuring that the small intestine can adequately process incoming chyme.
Q3 QUESTION 3 OF 22
A patient is experiencing vitamin toxicity. What type of vitamin would be causing this
toxicity? Explain your answer.
A. Water soluble vitamin
B. Fat soluble vitamin
C. All of the above
CORRECT ANSWER
Fat soluble vitamins are stored within the body's fat stores making it harder for
the body to rid itself of them.
RATIONALE
Fat-soluble vitamins, such as A, D, E, and K, accumulate in the body's adipose tissue and liver, leading to potential toxicity when ingested in
excessive amounts, unlike water-soluble vitamins that are excreted more readily through urine. This characteristic of fat solubility
underscores the risk of hypervitaminosis associated with these vitamins.
Q4 QUESTION 4 OF 22
Page 2
P R O F E S S I O N A L P R A C T I C E M AT E R I A L S
Portage BIOD 151 Module 3 Exam
Questions & Answers 2026-2027 |
Complete Study Guide | Verified
Practice Test (Rationales)
Verified Answers Exam Ready With Rationales
22 QUESTIONS
DOCUMENT OVERVIEW
This document contains 22 verified exam questions with correct answers and detailed rationales, focusing
on the topic of human digestion and physiology. It provides students with a comprehensive resource for
studying and reviewing key concepts within this subject area, ensuring a thorough understanding of the
material. This study guide is ideal for exam preparation and certification review, offering clear explanations
to enhance learning and retention.
E XA M Q U EST I O N S
Q1 QUESTION 1 OF 22
Explain why someone who has hypergastrinemia (excessive secretion of gastrin) might develop gastric/stomach ulcers.
CORRECT ANSWER
Gastrin stimulates the secretions of pepsinogens and hydrochloric acid. Excess
amounts would lead to erosion of the stomach lining.
Page 1
, RATIONALE
Elevated gastrin levels increase the secretion of hydrochloric acid and pepsinogens, leading to excessive gastric acidity and proteolytic
activity, which can erode the gastric mucosa and result in ulcer formation. This pathophysiological mechanism highlights the direct
correlation between hypergastrinemia and gastric ulcer development.
Q2 QUESTION 2 OF 22
Explain in detail how the stomach contents enter the small intestine
CORRECT ANSWER
The pyloric sphincter (valve), located at the base of the stomach, relaxes causing
a small quantity of chyme to pass through the opening into the first part of the
small intestine.
This initiates a reflex that causes the muscles of the sphincter to contract and
close the opening temporarily. Then the sphincter relaxes again and allows more
chyme to enter.
RATIONALE
The pyloric sphincter regulates the flow of chyme from the stomach to the duodenum by alternating between relaxation and contraction,
facilitating a controlled release of partially digested food while preventing backflow. This sphincter action is critical for maintaining
digestive efficiency and ensuring that the small intestine can adequately process incoming chyme.
Q3 QUESTION 3 OF 22
A patient is experiencing vitamin toxicity. What type of vitamin would be causing this
toxicity? Explain your answer.
A. Water soluble vitamin
B. Fat soluble vitamin
C. All of the above
CORRECT ANSWER
Fat soluble vitamins are stored within the body's fat stores making it harder for
the body to rid itself of them.
RATIONALE
Fat-soluble vitamins, such as A, D, E, and K, accumulate in the body's adipose tissue and liver, leading to potential toxicity when ingested in
excessive amounts, unlike water-soluble vitamins that are excreted more readily through urine. This characteristic of fat solubility
underscores the risk of hypervitaminosis associated with these vitamins.
Q4 QUESTION 4 OF 22
Page 2
