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

5. Integumentary System

The Epidermis: Cells

Anatomy & Physiology

5. Integumentary System

The Epidermis: Cells

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Multiple Choice

The epidermis receives blood containing oxygen and nutrients from which of the following?

Capillaries within the epidermis

The dermal blood vessels

Lymphatic vessels in the epidermis

Sebaceous glands

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Verified step by step guidance

Understand the structure of the skin: The skin is composed of two main layers, the epidermis (outer layer) and the dermis (inner layer). The epidermis is avascular, meaning it does not contain blood vessels.

Recognize the role of the dermis: The dermis contains blood vessels, which supply oxygen and nutrients to the epidermis through diffusion. This is because the epidermis relies on the dermal blood vessels for nourishment.

Eliminate incorrect options: Capillaries within the epidermis cannot be correct because the epidermis lacks blood vessels. Similarly, lymphatic vessels and sebaceous glands do not supply oxygen and nutrients to the epidermis.

Focus on diffusion: Nutrients and oxygen from the dermal blood vessels diffuse upward into the avascular epidermis to maintain its cells, particularly the basal layer where cell division occurs.

Conclude the correct answer: Based on the anatomy and physiology of the skin, the dermal blood vessels are responsible for supplying oxygen and nutrients to the epidermis.