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

Which structure has no digestive function, but conveys food to the stomach?

Small intestine

Esophagus

Mouth

Stomach

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Verified step by step guidance

Step 1: Begin by identifying the primary function of each structure listed in the problem. For example, the small intestine is responsible for nutrient absorption and digestion, the stomach is involved in chemical digestion, and the mouth is responsible for mechanical digestion and the initial breakdown of food.

Step 2: Understand the role of the esophagus in the digestive system. The esophagus is a muscular tube that conveys food from the mouth to the stomach through peristalsis, but it does not perform any digestive functions itself.

Step 3: Compare the functions of the listed structures to determine which one matches the description of conveying food to the stomach without performing digestion.

Step 4: Eliminate the options that involve digestive functions, such as the small intestine, stomach, and mouth, leaving the esophagus as the correct answer.

Step 5: Confirm your understanding by reviewing the anatomy and physiology of the esophagus, noting its role as a passageway rather than a site of digestion.