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 of the following structures is correctly identified as part of the alimentary canal in the digestive system?

Esophagus

Liver

Pancreas

Gallbladder

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Verified step by step guidance

Understand the definition of the alimentary canal: The alimentary canal, also known as the gastrointestinal (GI) tract, is the continuous muscular tube that runs from the mouth to the anus. It includes structures directly involved in the passage and processing of food.

Identify the structures that are part of the alimentary canal: The main components of the alimentary canal include the mouth, pharynx, esophagus, stomach, small intestine, large intestine, rectum, and anus.

Differentiate between the alimentary canal and accessory organs: Accessory organs, such as the liver, pancreas, and gallbladder, are not part of the alimentary canal. Instead, they assist in digestion by producing enzymes, bile, or other substances that aid in breaking down food.

Analyze the options provided: Among the options (Esophagus, Liver, Pancreas, Gallbladder), determine which structure is part of the alimentary canal. Based on the definition, the esophagus is a direct part of the alimentary canal as it transports food from the pharynx to the stomach.

Conclude the correct answer: The esophagus is the only structure listed that is part of the alimentary canal. The liver, pancreas, and gallbladder are accessory organs of the digestive system.