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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2:09 minutes

Problem 2

Textbook Question

The two major components of the integumentary system are
(a) The cutaneous membrane and the accessory structures
(b) The epidermis and the subcutaneous layer
(c) The hair and the nails
(d) The dermis and the subcutaneous layer

Verified step by step guidance

Step 1: Begin by understanding the integumentary system, which is the organ system that protects the body from external damage and includes skin, hair, nails, and associated glands.

Step 2: Recall that the integumentary system is primarily composed of two major components: the cutaneous membrane (skin) and accessory structures (such as hair, nails, and glands).

Step 3: Break down the cutaneous membrane into its layers: the epidermis (outer layer) and dermis (inner layer). Note that the subcutaneous layer is not part of the cutaneous membrane but lies beneath it.

Step 4: Evaluate the options provided in the question. Option (a) correctly identifies the cutaneous membrane and accessory structures as the two major components of the integumentary system.

Step 5: Confirm that other options (b, c, d) either misrepresent the components or focus on subcategories rather than the overarching major components of the system.

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Key Concepts

Here are the essential concepts you must grasp in order to answer the question correctly.

Integumentary System

The integumentary system is the body's largest organ system, primarily responsible for protecting the body from external damage, regulating temperature, and providing sensory information. It consists of the skin, hair, nails, and various glands. Understanding its components is essential for recognizing how they work together to maintain homeostasis.

Cutaneous Membrane

The cutaneous membrane, commonly known as the skin, is composed of two main layers: the epidermis and the dermis. The epidermis provides a protective barrier, while the dermis contains connective tissue, blood vessels, and nerve endings. This membrane plays a crucial role in protecting the body and facilitating sensory perception.

Accessory Structures

Accessory structures of the integumentary system include hair, nails, and various glands (such as sweat and sebaceous glands). These structures contribute to the skin's functions, such as thermoregulation, protection, and sensation. They are integral to the overall functionality of the integumentary system and its interaction with the environment.