A&P 1 101 Module 3 Exam - Digestive System Portage Learning | 45 Questions
A&P 1 101 Module 3 Exam
Digestive System Test — Portage Learning
45 Questions | 6 Sections | Comprehensive Rationales | Anatomical & Physiological Reasoning
Secti
Topic Questions
on
Digestive System Overview and Functions (Ingestion, Digestion,
1 Q1-8
Absorption, Defecation)
Anatomy of the Alimentary Canal (Mouth, Pharynx, Esophagus, Stomach,
2 Q9-18
Small & Large Intestine)
Accessory Digestive Organs (Liver, Pancreas, Gallbladder, Salivary
3 Q19-28
Glands, Teeth, Tongue)
4 Digestive Physiology and Enzymatic Action Q29-35
5 Hormonal Regulation and Metabolic Processes Q36-40
6 Cellular Metabolism (Glycolysis, TCA Cycle, Electron Transport System) Q41-45
Section 1: Digestive System Overview and Functions (Ingestion,
Digestion, Absorption, Defecation) (Q1 - Q8)
Q1: Which of the following correctly sequences the four primary functions of the digestive
system as covered in Portage Learning Module 3?
A. Absorption, digestion, ingestion, defecation
B. Ingestion, digestion, absorption, defecation [CORRECT]
C. Digestion, ingestion, defecation, absorption
D. Ingestion, absorption, digestion, defecation
Correct Answer: B
Rationale:
The four primary digestive functions occur in the sequence: (1) Ingestion (food enters the mouth), (2)
Digestion (food is broken down mechanically and chemically), (3) Absorption (digested nutrients
move into the bloodstream), and (4) Defecation (indigestible waste is excreted from the anus). The
other options confuse the order, particularly by placing absorption before digestion (which is
impossible because food must be broken down before nutrients can be absorbed) or placing
defecation before absorption (which would eliminate the body's ability to obtain nutrients before
waste removal).
A&P 1 Module 3 - Digestive System Page 1 Portage Learning
,A&P 1 101 Module 3 Exam - Digestive System Portage Learning | 45 Questions
Q2: A clinical scenario: A patient with a damaged epiglottis following radiation therapy has
difficulty swallowing without aspirating. Which digestive function is most directly
impaired in this patient?
A. Defecation, because waste cannot exit
B. Ingestion, because food cannot safely enter the digestive tract without entering the
airway [CORRECT]
C. Absorption, because nutrients cannot cross the intestinal wall
D. Chemical digestion, because enzymes cannot reach the food
Correct Answer: B
Rationale:
Ingestion is the entry of food into the digestive tract through the mouth, and the epiglottis is critical
to safe ingestion because it covers the larynx during swallowing, preventing food from entering the
trachea and lungs. A damaged epiglottis causes aspiration, which impairs ingestion because food
cannot safely travel from the mouth into the esophagus. Defecation, absorption, and chemical
digestion occur later in the alimentary canal and are not directly affected by epiglottis dysfunction.
This question addresses a common Portage Learning emphasis on the esophagus vs. trachea
confusion and the protective role of the epiglottis.
Q3: Which of the following is an example of MECHANICAL digestion rather than chemical
digestion?
A. Salivary amylase breaking down starches in the mouth
B. Pepsin breaking down proteins in the stomach
C. Churning and mixing of food by the stomach's muscular layers [CORRECT]
D. Bile emulsifying fats in the duodenum
Correct Answer: C
Rationale:
Mechanical digestion involves the physical breakdown of food into smaller pieces without changing
its chemical composition; the churning and mixing action of the stomach's three muscular layers is a
classic example. The other options are examples of chemical digestion: salivary amylase and pepsin
are enzymes that chemically break down starches and proteins respectively, and bile chemically
emulsifies fats (although emulsification is sometimes considered mechanical because it physically
disperses fat globules, the Portage Learning curriculum specifically classifies salivary amylase as
chemical digestion and lists chewing, mixing, and churning as the mechanical processes).
A&P 1 Module 3 - Digestive System Page 2 Portage Learning
, A&P 1 101 Module 3 Exam - Digestive System Portage Learning | 45 Questions
Q4: A patient with liver disease produces insufficient bile. Which digestive function is most
directly compromised, and what is the clinical symptom the patient would most likely
report?
A. Ingestion; difficulty swallowing
B. Absorption of fats; intolerance to fatty foods [CORRECT]
C. Defecation; constipation
D. Mechanical digestion; inability to chew
Correct Answer: B
Rationale:
Bile, produced by the liver, emulsifies fats so they can be digested by lipases and absorbed in the
small intestine. A patient with liver disease produces less bile, leading to impaired fat digestion and
absorption, which clinically presents as intolerance to fatty foods (steatorrhea, bloating, and
abdominal discomfort after fatty meals). The Portage Learning curriculum explicitly notes: 'If
diseased, [the liver] produces less bile causing fatty food intolerance.' Ingestion, defecation, and
mechanical digestion are not directly affected by bile production because they involve different
anatomical structures and processes.
Q5: Which of the following BEST distinguishes the alimentary canal from the accessory
digestive organs?
A. The alimentary canal includes organs that food passes through (mouth, pharynx,
esophagus, stomach, small intestine, large intestine, anus); accessory organs (teeth,
tongue, salivary glands, liver, pancreas, gallbladder) aid digestion but food does not pass
through them [CORRECT]
B. The alimentary canal includes only the stomach and intestines; accessory organs include
everything else
C. The alimentary canal includes organs that produce enzymes; accessory organs store
nutrients
D. The alimentary canal is responsible for chemical digestion; accessory organs handle
mechanical digestion
Correct Answer: A
Rationale:
The alimentary canal is a continuous muscular tube open at both ends through which food physically
travels, including the mouth, pharynx, esophagus, stomach, small intestine, large intestine, and
anus. Accessory digestive organs (teeth, tongue, salivary glands, liver, pancreas, and gallbladder)
contribute to digestion by producing enzymes, bile, and mechanical processing, but food does not
pass through them. The other options incorrectly narrow the alimentary canal (which includes more
than just the stomach and intestines) or misclassify functions (both canal and accessory organs
contribute to chemical and mechanical digestion).
A&P 1 Module 3 - Digestive System Page 3 Portage Learning
A&P 1 101 Module 3 Exam
Digestive System Test — Portage Learning
45 Questions | 6 Sections | Comprehensive Rationales | Anatomical & Physiological Reasoning
Secti
Topic Questions
on
Digestive System Overview and Functions (Ingestion, Digestion,
1 Q1-8
Absorption, Defecation)
Anatomy of the Alimentary Canal (Mouth, Pharynx, Esophagus, Stomach,
2 Q9-18
Small & Large Intestine)
Accessory Digestive Organs (Liver, Pancreas, Gallbladder, Salivary
3 Q19-28
Glands, Teeth, Tongue)
4 Digestive Physiology and Enzymatic Action Q29-35
5 Hormonal Regulation and Metabolic Processes Q36-40
6 Cellular Metabolism (Glycolysis, TCA Cycle, Electron Transport System) Q41-45
Section 1: Digestive System Overview and Functions (Ingestion,
Digestion, Absorption, Defecation) (Q1 - Q8)
Q1: Which of the following correctly sequences the four primary functions of the digestive
system as covered in Portage Learning Module 3?
A. Absorption, digestion, ingestion, defecation
B. Ingestion, digestion, absorption, defecation [CORRECT]
C. Digestion, ingestion, defecation, absorption
D. Ingestion, absorption, digestion, defecation
Correct Answer: B
Rationale:
The four primary digestive functions occur in the sequence: (1) Ingestion (food enters the mouth), (2)
Digestion (food is broken down mechanically and chemically), (3) Absorption (digested nutrients
move into the bloodstream), and (4) Defecation (indigestible waste is excreted from the anus). The
other options confuse the order, particularly by placing absorption before digestion (which is
impossible because food must be broken down before nutrients can be absorbed) or placing
defecation before absorption (which would eliminate the body's ability to obtain nutrients before
waste removal).
A&P 1 Module 3 - Digestive System Page 1 Portage Learning
,A&P 1 101 Module 3 Exam - Digestive System Portage Learning | 45 Questions
Q2: A clinical scenario: A patient with a damaged epiglottis following radiation therapy has
difficulty swallowing without aspirating. Which digestive function is most directly
impaired in this patient?
A. Defecation, because waste cannot exit
B. Ingestion, because food cannot safely enter the digestive tract without entering the
airway [CORRECT]
C. Absorption, because nutrients cannot cross the intestinal wall
D. Chemical digestion, because enzymes cannot reach the food
Correct Answer: B
Rationale:
Ingestion is the entry of food into the digestive tract through the mouth, and the epiglottis is critical
to safe ingestion because it covers the larynx during swallowing, preventing food from entering the
trachea and lungs. A damaged epiglottis causes aspiration, which impairs ingestion because food
cannot safely travel from the mouth into the esophagus. Defecation, absorption, and chemical
digestion occur later in the alimentary canal and are not directly affected by epiglottis dysfunction.
This question addresses a common Portage Learning emphasis on the esophagus vs. trachea
confusion and the protective role of the epiglottis.
Q3: Which of the following is an example of MECHANICAL digestion rather than chemical
digestion?
A. Salivary amylase breaking down starches in the mouth
B. Pepsin breaking down proteins in the stomach
C. Churning and mixing of food by the stomach's muscular layers [CORRECT]
D. Bile emulsifying fats in the duodenum
Correct Answer: C
Rationale:
Mechanical digestion involves the physical breakdown of food into smaller pieces without changing
its chemical composition; the churning and mixing action of the stomach's three muscular layers is a
classic example. The other options are examples of chemical digestion: salivary amylase and pepsin
are enzymes that chemically break down starches and proteins respectively, and bile chemically
emulsifies fats (although emulsification is sometimes considered mechanical because it physically
disperses fat globules, the Portage Learning curriculum specifically classifies salivary amylase as
chemical digestion and lists chewing, mixing, and churning as the mechanical processes).
A&P 1 Module 3 - Digestive System Page 2 Portage Learning
, A&P 1 101 Module 3 Exam - Digestive System Portage Learning | 45 Questions
Q4: A patient with liver disease produces insufficient bile. Which digestive function is most
directly compromised, and what is the clinical symptom the patient would most likely
report?
A. Ingestion; difficulty swallowing
B. Absorption of fats; intolerance to fatty foods [CORRECT]
C. Defecation; constipation
D. Mechanical digestion; inability to chew
Correct Answer: B
Rationale:
Bile, produced by the liver, emulsifies fats so they can be digested by lipases and absorbed in the
small intestine. A patient with liver disease produces less bile, leading to impaired fat digestion and
absorption, which clinically presents as intolerance to fatty foods (steatorrhea, bloating, and
abdominal discomfort after fatty meals). The Portage Learning curriculum explicitly notes: 'If
diseased, [the liver] produces less bile causing fatty food intolerance.' Ingestion, defecation, and
mechanical digestion are not directly affected by bile production because they involve different
anatomical structures and processes.
Q5: Which of the following BEST distinguishes the alimentary canal from the accessory
digestive organs?
A. The alimentary canal includes organs that food passes through (mouth, pharynx,
esophagus, stomach, small intestine, large intestine, anus); accessory organs (teeth,
tongue, salivary glands, liver, pancreas, gallbladder) aid digestion but food does not pass
through them [CORRECT]
B. The alimentary canal includes only the stomach and intestines; accessory organs include
everything else
C. The alimentary canal includes organs that produce enzymes; accessory organs store
nutrients
D. The alimentary canal is responsible for chemical digestion; accessory organs handle
mechanical digestion
Correct Answer: A
Rationale:
The alimentary canal is a continuous muscular tube open at both ends through which food physically
travels, including the mouth, pharynx, esophagus, stomach, small intestine, large intestine, and
anus. Accessory digestive organs (teeth, tongue, salivary glands, liver, pancreas, and gallbladder)
contribute to digestion by producing enzymes, bile, and mechanical processing, but food does not
pass through them. The other options incorrectly narrow the alimentary canal (which includes more
than just the stomach and intestines) or misclassify functions (both canal and accessory organs
contribute to chemical and mechanical digestion).
A&P 1 Module 3 - Digestive System Page 3 Portage Learning
