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 correctly identifies the major layers of the skin and one primary function of each?

Epidermis: temperature regulation; Dermis: vitamin D synthesis

Epidermis: blood supply; Dermis: keratin production

Epidermis: fat storage; Dermis: waterproofing

Epidermis: protection; Dermis: sensory reception

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Verified step by step guidance

Step 1: Begin by identifying the major layers of the skin. The skin is composed of two primary layers: the epidermis (outer layer) and the dermis (inner layer). Each layer has distinct functions and structures.

Step 2: Understand the primary function of the epidermis. The epidermis serves as a protective barrier against environmental damage, pathogens, and water loss. It contains keratinocytes that produce keratin, a protein that strengthens the skin.

Step 3: Examine the primary function of the dermis. The dermis is responsible for sensory reception, as it contains nerve endings that detect touch, pressure, temperature, and pain. It also houses blood vessels, sweat glands, and connective tissue.

Step 4: Evaluate the incorrect options provided in the question. For example, temperature regulation is primarily managed by sweat glands and blood vessels in the dermis, not the epidermis. Similarly, vitamin D synthesis occurs in the epidermis, but it is not its primary function.

Step 5: Confirm the correct answer: 'Epidermis: protection; Dermis: sensory reception.' This aligns with the anatomical and physiological roles of these layers.