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

Introduction to the Integumentary System

Anatomy & Physiology

5. Integumentary System

Introduction to the Integumentary System

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Multiple Choice

Which of the following statements is true regarding the blood supply to the skin?

The skin does not require a blood supply because it receives nutrients from the air.

The epidermis contains numerous blood vessels that directly nourish its cells.

The dermis contains an extensive network of blood vessels that supply nutrients to the skin.

Blood vessels in the skin are only found in the hypodermis.

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Verified step by step guidance

Understand the structure of the skin: The skin is composed of three main layers—epidermis, dermis, and hypodermis. Each layer has distinct functions and characteristics.

Clarify the blood supply to the epidermis: The epidermis is avascular, meaning it does not contain blood vessels. Nutrients and oxygen diffuse from the blood vessels in the dermis to nourish the epidermal cells.

Examine the dermis: The dermis contains an extensive network of blood vessels. These vessels are responsible for supplying nutrients and oxygen to the skin and removing waste products. This is the primary layer involved in the skin's blood supply.

Address the hypodermis: The hypodermis, also known as the subcutaneous layer, contains larger blood vessels that support the dermis and epidermis indirectly. However, it is not the sole location of blood vessels in the skin.

Evaluate the statements: Based on the anatomical understanding, the correct statement is: 'The dermis contains an extensive network of blood vessels that supply nutrients to the skin.' The other statements are incorrect because the epidermis lacks blood vessels, and the hypodermis is not the only layer with blood vessels.