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BIOL 431 - Digestive System Exam Questions and Answers
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BIOL 431 - Digestive System Exam Questions and Answers
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BIOL 431 - Digestive System ExamQuestions and Answers
What are the two groups of organs in the digestive system? - Answer-1. Alimentary
canal (gastrointestinal tract)
2. Accessory digestive organs
What are the six essential activities of the digestive process? - Answer-1. Ingestion
2. Propulsion
3. Mechanical breakdown
4. Digestion
5. Absorption
6. Defecation
Peritoneum - Answer-Serous membrane of the abdominal cavity
Visceral peritoneum vs parietal peritoneum? - Answer-Visceral lines the external
surfaces of most digestive organs, while parietal lines the body wall.
Peritoneal cavity - Answer-The space between two peritoneums -- secretes fluid to
lubricate mobile organs.
What is the mesentery? - Answer-Doubled-layer peritoneum that acts as a route for
blood vessels, lymphatics, and nerves. Also holds organs in place.
Retroperitoneal organs - Answer-Organs posterior to the peritoneum.
Intraperitoneal organs - Answer-Organs surrounded by the peritoneum.
Hepatic Portal Circulation - Answer-Drains nutrient-rich blood from digestive organs and
delivers to liver for processing.
What are the four layers (tunics) of the Alimentary canal? - Answer-1. Mucosa
2. Submucosa
3. Muscularis Externa
4. Serosa
What makes up the mucosa layer? - Answer-*Epithelium
- simple columnar epithelium
- mucus
*Lamina propria
- Loose areolar CT
- capillaries for nourishment
- Lymphod follicles
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