BIOL 252 Human Anatomy & Physiology II w/Lab Exam
Prep 2026 | 200 Practice Questions & Detailed Answers
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Questions 1–200
1. What are the two main groups of organs in the digestive system?
A. Upper and lower GI tract
B. Alimentary canal and accessory organs
C. Primary and secondary digestive organs
D. Hollow and solid organs
Answer: B. The alimentary canal (GI tract) is the continuous tube from mouth to anus. Accessory organs
include teeth, tongue, salivary glands, liver, gallbladder, and pancreas.
2. Which of the following is NOT a function of the digestive system?
A. Ingestion
B. Absorption
C. Filtration
D. Defecation
Answer: C. The digestive system functions include ingestion, digestion (mechanical and chemical),
absorption, and defecation. Filtration is a function of the urinary system.
,3. Starting from the lumen and moving outward, what are the four primary tissue layers of the
alimentary canal?
A. Serosa, muscularis externa, submucosa, mucosa
B. Mucosa, submucosa, muscularis externa, serosa
C. Submucosa, mucosa, serosa, muscularis externa
D. Muscularis externa, serosa, mucosa, submucosa
Answer: B. The four primary tissue layers of the alimentary canal from the lumen outward are: mucosa,
submucosa, muscularis externa, and serosa (or adventitia).
4. Which layer of the alimentary canal is responsible for peristalsis?
A. Mucosa
B. Submucosa
C. Muscularis externa
D. Serosa
Answer: C. The muscularis externa contains two layers of smooth muscle (circular and longitudinal)
responsible for peristalsis and segmentation.
5. Which layer of the alimentary canal contains blood vessels, lymphatic vessels, and the submucosal
(Meissner's) nerve plexus?
A. Mucosa
B. Submucosa
C. Muscularis externa
D. Serosa
,Answer: B. The submucosa contains blood vessels, lymphatic vessels, and the submucosal plexus
(Meissner's plexus), which supplies the mucosa.
6. What specific type of epithelium lines the esophagus to protect it from abrasive food particles?
A. Simple columnar epithelium
B. Nonkeratinized stratified squamous epithelium
C. Simple squamous epithelium
D. Transitional epithelium
Answer: B. The esophagus is lined with nonkeratinized stratified squamous epithelium, which protects
against abrasion from food. It is nonkeratinized because it remains moist.
7. What type of epithelium lines the stomach and intestines to facilitate secretion and absorption?
A. Stratified squamous epithelium
B. Simple columnar epithelium
C. Simple squamous epithelium
D. Pseudostratified columnar epithelium
Answer: B. The stomach and intestines are lined with simple columnar epithelium, which facilitates
secretion and absorption. The stomach contains gastric pits and glands that secrete mucus to protect
the stomach lining from acid.
, 8. What is the name of the longitudinal folds of the mucosa and submucosa in the stomach that allow it
to expand when filled?
A. Plicae circulares
B. Villi
C. Rugae
D. Microvilli
Answer: C. Rugae are the longitudinal folds of the mucosa and submucosa in the stomach that allow it to
expand when filled with food.
9. Which of the following is the first region of the small intestine where chemical digestion and nutrient
absorption occur?
A. Jejunum
B. Ileum
C. Duodenum
D. Cecum
Answer: C. The duodenum is the first region of the small intestine, receiving chyme from the stomach
along with digestive enzymes and bile for chemical digestion and nutrient absorption.
10. What are the three anatomical subdivisions of the small intestine in sequential order from the
stomach?
A. Ileum, jejunum, duodenum
B. Duodenum, jejunum, ileum
C. Jejunum, ileum, duodenum
D. Duodenum, ileum, jejunum
Prep 2026 | 200 Practice Questions & Detailed Answers
| Portage Learning Module 6 Review | LockDown
Browser Ready
Questions 1–200
1. What are the two main groups of organs in the digestive system?
A. Upper and lower GI tract
B. Alimentary canal and accessory organs
C. Primary and secondary digestive organs
D. Hollow and solid organs
Answer: B. The alimentary canal (GI tract) is the continuous tube from mouth to anus. Accessory organs
include teeth, tongue, salivary glands, liver, gallbladder, and pancreas.
2. Which of the following is NOT a function of the digestive system?
A. Ingestion
B. Absorption
C. Filtration
D. Defecation
Answer: C. The digestive system functions include ingestion, digestion (mechanical and chemical),
absorption, and defecation. Filtration is a function of the urinary system.
,3. Starting from the lumen and moving outward, what are the four primary tissue layers of the
alimentary canal?
A. Serosa, muscularis externa, submucosa, mucosa
B. Mucosa, submucosa, muscularis externa, serosa
C. Submucosa, mucosa, serosa, muscularis externa
D. Muscularis externa, serosa, mucosa, submucosa
Answer: B. The four primary tissue layers of the alimentary canal from the lumen outward are: mucosa,
submucosa, muscularis externa, and serosa (or adventitia).
4. Which layer of the alimentary canal is responsible for peristalsis?
A. Mucosa
B. Submucosa
C. Muscularis externa
D. Serosa
Answer: C. The muscularis externa contains two layers of smooth muscle (circular and longitudinal)
responsible for peristalsis and segmentation.
5. Which layer of the alimentary canal contains blood vessels, lymphatic vessels, and the submucosal
(Meissner's) nerve plexus?
A. Mucosa
B. Submucosa
C. Muscularis externa
D. Serosa
,Answer: B. The submucosa contains blood vessels, lymphatic vessels, and the submucosal plexus
(Meissner's plexus), which supplies the mucosa.
6. What specific type of epithelium lines the esophagus to protect it from abrasive food particles?
A. Simple columnar epithelium
B. Nonkeratinized stratified squamous epithelium
C. Simple squamous epithelium
D. Transitional epithelium
Answer: B. The esophagus is lined with nonkeratinized stratified squamous epithelium, which protects
against abrasion from food. It is nonkeratinized because it remains moist.
7. What type of epithelium lines the stomach and intestines to facilitate secretion and absorption?
A. Stratified squamous epithelium
B. Simple columnar epithelium
C. Simple squamous epithelium
D. Pseudostratified columnar epithelium
Answer: B. The stomach and intestines are lined with simple columnar epithelium, which facilitates
secretion and absorption. The stomach contains gastric pits and glands that secrete mucus to protect
the stomach lining from acid.
, 8. What is the name of the longitudinal folds of the mucosa and submucosa in the stomach that allow it
to expand when filled?
A. Plicae circulares
B. Villi
C. Rugae
D. Microvilli
Answer: C. Rugae are the longitudinal folds of the mucosa and submucosa in the stomach that allow it to
expand when filled with food.
9. Which of the following is the first region of the small intestine where chemical digestion and nutrient
absorption occur?
A. Jejunum
B. Ileum
C. Duodenum
D. Cecum
Answer: C. The duodenum is the first region of the small intestine, receiving chyme from the stomach
along with digestive enzymes and bile for chemical digestion and nutrient absorption.
10. What are the three anatomical subdivisions of the small intestine in sequential order from the
stomach?
A. Ileum, jejunum, duodenum
B. Duodenum, jejunum, ileum
C. Jejunum, ileum, duodenum
D. Duodenum, ileum, jejunum
