Anatomy & Physiology – Digestive System (10 NCLEX-style Questions with Answers &
Rationales)
1. Question
A 48-year-old male patient with a history of uncontrolled hypertension and chronic smoking
presents to the emergency room with acute abdominal pain and vomiting for the last 48 hours.
An abdominal CT scan reveals a focal thickening of a segment of the small bowel. The consulting
gastroenterologist believes that the patient might have an ischemic bowel. As part of the
teaching rounds, the gastroenterology nurse educator, interested in ensuring that the nurses
can understand the pathology at hand, quizzes them about the anatomical structure of the
gastrointestinal (GI) tract. Given the relevance of understanding the layered architecture of the
GI tract in order to appreciate the intricacies of diseases like bowel ischemia, which of the
following layers, integral to the structure of the digestive tract, should the instructor ask
students to identify as NOT one of the four primary tunics?
A. Mucosa
B. Glandulosa
C. Submucosa
D. Muscularis
Correct Answer: B. Glandulosa
“Glandulosa” is not one of the four primary tunics found throughout the digestive tract. Instead,
the four tunics are the mucosa, submucosa, muscularis, and serosa (or adventitia in some
areas), each with distinct functions related to digestion and nutrient absorption.
Option A: This is incorrect as the mucosa is indeed one of the primary layers of
the GI tract. It is the innermost layer and serves multiple functions, including
secretion, absorption, and protection.
Option C: This is incorrect as the submucosa is one of the primary layers of the GI
tract. It lies just outside the mucosa and consists of connective tissue, blood
vessels, lymphatic vessels, and nerves. It provides nutrition to the mucosa and
supports it.
Option D: This is incorrect. The muscularis is another primary layer of the GI
tract. It comprises two layers of smooth muscle (inner circular and outer
longitudinal) that propel food and chyme through the GI tract. This process is
known as peristalsis.
ALL THE BEST
, 2. Question
A 64-year-old female patient, post 3 weeks from a left hemispheric ischemic stroke, is admitted
to the rehabilitation unit. She has made significant improvements in her motor functions but
continues to face challenges with eating and speaking. The speech therapist identified
dysphagia, and the patient was kept on a modified diet. During the interdisciplinary rounds, the
nursing educator, emphasizing the intricate functions of the oral cavity, presents a didactic
moment for the nursing interns. Given the patient’s challenges post-stroke, the nurse quizzes
them on the various functions associated with the tongue. In the context of this patient’s clinical
presentation and the fundamental role of the tongue in maintaining oral functions, which of the
following functions should the nurse ask the students to identify as associated with the
tongue? Select all that apply.
A. Crucial organ for speech
B. Primary organ for taste
C. Vital for swallowing food
D. Manipulates food for mastication
E. Salivary enzyme secretion
Correct Answer: A, B, C, and D
The tongue is a large, muscular organ that occupies most of the oral cavity. It moves food in the
mouth and, in cooperation with the lips and cheeks, holds the food in place during mastication.
It also plays a major role in the process of swallowing. The tongue is a major sensory organ for
taste, as well as being one of the major organs of speech.
Option A: This is correct. The tongue is considered an organ for speech because
it plays a role in articulating sounds and shaping the vocal tract during speech
production. Its flexibility, mobility, and ability to interact with other speech-
related structures like the lips and palate enable it to produce a wide range of
sounds and facilitate clear communication.
Option B: This is correct. The tongue is the primary organ for taste because it
houses the majority of taste buds that detect and distinguish various flavors in
the foods and liquids we consume.
ALL THE BEST
Rationales)
1. Question
A 48-year-old male patient with a history of uncontrolled hypertension and chronic smoking
presents to the emergency room with acute abdominal pain and vomiting for the last 48 hours.
An abdominal CT scan reveals a focal thickening of a segment of the small bowel. The consulting
gastroenterologist believes that the patient might have an ischemic bowel. As part of the
teaching rounds, the gastroenterology nurse educator, interested in ensuring that the nurses
can understand the pathology at hand, quizzes them about the anatomical structure of the
gastrointestinal (GI) tract. Given the relevance of understanding the layered architecture of the
GI tract in order to appreciate the intricacies of diseases like bowel ischemia, which of the
following layers, integral to the structure of the digestive tract, should the instructor ask
students to identify as NOT one of the four primary tunics?
A. Mucosa
B. Glandulosa
C. Submucosa
D. Muscularis
Correct Answer: B. Glandulosa
“Glandulosa” is not one of the four primary tunics found throughout the digestive tract. Instead,
the four tunics are the mucosa, submucosa, muscularis, and serosa (or adventitia in some
areas), each with distinct functions related to digestion and nutrient absorption.
Option A: This is incorrect as the mucosa is indeed one of the primary layers of
the GI tract. It is the innermost layer and serves multiple functions, including
secretion, absorption, and protection.
Option C: This is incorrect as the submucosa is one of the primary layers of the GI
tract. It lies just outside the mucosa and consists of connective tissue, blood
vessels, lymphatic vessels, and nerves. It provides nutrition to the mucosa and
supports it.
Option D: This is incorrect. The muscularis is another primary layer of the GI
tract. It comprises two layers of smooth muscle (inner circular and outer
longitudinal) that propel food and chyme through the GI tract. This process is
known as peristalsis.
ALL THE BEST
, 2. Question
A 64-year-old female patient, post 3 weeks from a left hemispheric ischemic stroke, is admitted
to the rehabilitation unit. She has made significant improvements in her motor functions but
continues to face challenges with eating and speaking. The speech therapist identified
dysphagia, and the patient was kept on a modified diet. During the interdisciplinary rounds, the
nursing educator, emphasizing the intricate functions of the oral cavity, presents a didactic
moment for the nursing interns. Given the patient’s challenges post-stroke, the nurse quizzes
them on the various functions associated with the tongue. In the context of this patient’s clinical
presentation and the fundamental role of the tongue in maintaining oral functions, which of the
following functions should the nurse ask the students to identify as associated with the
tongue? Select all that apply.
A. Crucial organ for speech
B. Primary organ for taste
C. Vital for swallowing food
D. Manipulates food for mastication
E. Salivary enzyme secretion
Correct Answer: A, B, C, and D
The tongue is a large, muscular organ that occupies most of the oral cavity. It moves food in the
mouth and, in cooperation with the lips and cheeks, holds the food in place during mastication.
It also plays a major role in the process of swallowing. The tongue is a major sensory organ for
taste, as well as being one of the major organs of speech.
Option A: This is correct. The tongue is considered an organ for speech because
it plays a role in articulating sounds and shaping the vocal tract during speech
production. Its flexibility, mobility, and ability to interact with other speech-
related structures like the lips and palate enable it to produce a wide range of
sounds and facilitate clear communication.
Option B: This is correct. The tongue is the primary organ for taste because it
houses the majority of taste buds that detect and distinguish various flavors in
the foods and liquids we consume.
ALL THE BEST
