BIOL252 / BIOL 252 Module 7 Exam | Human Anatomy & Physiology II w/ Lab | Portage Learning | Q & A | 2026/2027 Edition

BIOL252 / BIOL 252 Module 7 Exam | Human Anatomy & Physiology II w/ Lab | Portage Learning | Q & A |
2026/2027 Edition


Questions 1–250


1. The primary function of the digestive system is to:
A) Break down food into absorbable nutrients and eliminate waste
B) Transport oxygen to cells
C) Regulate body temperature
D) Produce hormones
Answer A: Break down food into absorbable nutrients and eliminate waste
Rationale: The digestive system is responsible for ingestion, mechanical and chemical digestion, absorption
of nutrients, and elimination of waste.




2. Which of the following is NOT a function of the digestive system?
A) Ingestion
B) Mechanical digestion
C) Absorption
D) Gas exchange
Answer D: Gas exchange
Rationale: Gas exchange is a function of the respiratory system, not the digestive system.




3. The alimentary canal (gastrointestinal tract) includes all of the following EXCEPT:
A) Esophagus
B) Stomach
C) Liver
D) Large intestine
Answer C: Liver
Rationale: The liver is an accessory organ, not part of the alimentary canal. The alimentary canal includes
the oral cavity, pharynx, esophagus, stomach, small intestine, and large intestine.

,4. Which of the following is an accessory organ of the digestive system?
A) Liver
B) Esophagus
C) Stomach
D) Small intestine
Answer A: Liver
Rationale: The liver, gallbladder, and pancreas are accessory organs that aid in digestion but are not part of
the alimentary canal.




5. The inner lining of the alimentary canal is called the:
A) Serosa
B) Mucosa
C) Submucosa
D) Muscularis externa
Answer B: Mucosa
Rationale: The mucosa is the innermost layer of the alimentary canal, lining the lumen.




6. The outermost layer of the alimentary canal (within the abdominal cavity) is the:
A) Mucosa
B) Submucosa
C) Muscularis externa
D) Serosa (visceral peritoneum)
Answer D: Serosa (visceral peritoneum)
Rationale: The serosa is the outermost layer of the alimentary canal, consisting of the visceral peritoneum.




7. The submucosa contains:
A) Epithelial tissue
B) Blood vessels, nerves, and lymphatic vessels
C) Smooth muscle
D) Serous membrane
Answer B: Blood vessels, nerves, and lymphatic vessels
Rationale: The submucosa contains blood vessels, nerves, and lymphatic vessels that support the mucosa.

,8. The muscularis externa of the alimentary canal is responsible for:
A) Peristalsis and segmentation
B) Secretion of mucus
C) Absorption of nutrients
D) Protection from pathogens
Answer A: Peristalsis and segmentation
Rationale: The muscularis externa contains smooth muscle that facilitates peristalsis and segmentation.




9. Which layer of the alimentary canal is responsible for secretion and absorption?
A) Mucosa
B) Submucosa
C) Muscularis externa
D) Serosa
Answer A: Mucosa
Rationale: The mucosa is the innermost layer responsible for secretion of mucus and enzymes and
absorption of nutrients.




10. The type of muscle found in the muscularis externa of the alimentary canal is:
A) Smooth muscle
B) Skeletal muscle
C) Cardiac muscle
D) Striated muscle
Answer A: Smooth muscle
Rationale: The muscularis externa is composed of smooth muscle, which is involuntary.




11. The oral cavity is lined with which type of epithelium?
A) Simple squamous epithelium
B) Stratified squamous epithelium
C) Simple columnar epithelium
D) Transitional epithelium
Answer B: Stratified squamous epithelium

, Rationale: The oral cavity is lined with stratified squamous epithelium to protect against abrasion.
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12. The papillae on the tongue contain:
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A) Taste buds
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B) Salivary glands
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C) Olfactory receptors
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D) Lymph nodes
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Answer A: Taste buds
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Rationale: Taste buds are located within the papillae on the tongue.
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13. The types of papillae that contain taste buds include all of the following EXCEPT:
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A) Fungiform papillae
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B) Vallate (circumvallate) papillae
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C) Foliate papillae
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D) Filiform papillae
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Answer D: Filiform papillae
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Rationale: Filiform papillae are the most numerous but do not contain taste buds.
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14. The hard palate is formed by:
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A) Bone (maxilla and palatine bones)
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B) Muscle
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C) Cartilage
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D) Connective tissue
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Answer A: Bone (maxilla and palatine bones)
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Rationale: The hard palate is formed by the maxilla and palatine bones.
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15. The soft palate is formed by:
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A) Bone
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B) Muscle
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C) Cartilage
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D) Connective tissue
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Answer B: Muscle
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