Table of contents

1. Introduction to Anatomy & Physiology5h 43m
2. Cell Chemistry & Cell Components12h 36m
3. Energy & Cell Processes10h 6m
4. Tissues & Histology10h 3m
5. Integumentary System2h 20m
6. Bones & Skeletal Tissue2h 16m
7. The Skeletal System2h 35m
8. Joints2h 17m
9. Muscle Tissue2h 33m
10. Muscles1h 11m
11. Nervous Tissue and Nervous System1h 35m
12. The Central Nervous System1h 6m
- Introduction to the Central Nervous System
  18m
- The Cerebrum
  48m
13. The Peripheral Nervous System1h 26m
14. The Autonomic Nervous System1h 38m
15. The Special Senses2h 41m
16. The Endocrine System2h 48m
17. The Blood3h 22m
18. The Heart3h 42m
19. The Blood Vessels3h 35m
20. The Lymphatic System3h 16m
21. The Immune System14h 37m
22. The Respiratory System3h 20m
23. The Digestive System2h 5m
24. Metabolism and Nutrition4h 0m
25. The Urinary System2h 39m
26. Fluid and Electrolyte Balance, Acid Base Balance37m
27. The Reproductive System2h 5m
28. Human Development1h 21m
29. Heredity3h 32m

23. The Digestive System

Introduction to the Digestive System

Anatomy & Physiology

23. The Digestive System

Introduction to the Digestive System

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Multiple Choice

What are the folds of the stomach called?

Rugae

Plicae circulares

Villi

Haustra

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Verified step by step guidance

Step 1: Begin by understanding the anatomy of the stomach. The stomach is a muscular organ involved in digestion, and its inner lining has folds that allow it to expand when food enters.

Step 2: Learn the term 'rugae.' Rugae are the folds in the stomach lining that increase surface area and allow the stomach to stretch and accommodate food. They are specific to the stomach and are not found in other parts of the digestive system.

Step 3: Compare the other terms provided in the options. 'Plicae circulares' are folds found in the small intestine, specifically in the jejunum and ileum, to increase surface area for absorption. 'Villi' are finger-like projections on the plicae circulares that further enhance absorption. 'Haustra' are pouch-like structures found in the large intestine, aiding in the movement of waste.

Step 4: Eliminate the incorrect options based on their anatomical location and function. Since the question specifically asks about the folds of the stomach, the correct term is 'rugae.' The other terms refer to structures in different parts of the digestive system.

Step 5: Conclude that the folds of the stomach are called 'rugae,' which are unique to the stomach and play a role in its ability to expand and contract during digestion.