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

2. Cell Chemistry & Cell Components

Introduction to Eukaryotic Organelles

Anatomy & Physiology

2. Cell Chemistry & Cell Components

Introduction to Eukaryotic Organelles

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Multiple Choice

The capillaries that nourish the epithelium and absorb digested nutrients lie in the ________.

serosa

lamina propria

submucosa

muscularis externa

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Verified step by step guidance

Understand the structure of the gastrointestinal (GI) tract wall, which consists of four main layers: mucosa, submucosa, muscularis externa, and serosa.

Focus on the mucosa layer, as it is the innermost layer and directly involved in absorption and nourishment of epithelial cells.

Learn that the mucosa is subdivided into three parts: the epithelium, the lamina propria, and the muscularis mucosae. The lamina propria is a connective tissue layer that contains capillaries and lymphatic vessels.

Recognize that the lamina propria provides nourishment to the epithelium and absorbs digested nutrients, making it the correct answer in this context.

Review the roles of the other layers (submucosa, muscularis externa, and serosa) to understand why they are not correct answers. For example, the submucosa contains larger blood vessels and nerves but does not directly nourish the epithelium.