Multiple Choice
Which of the following is NOT a major cell type found in the epidermis of the skin?
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5. Integumentary System
Introduction to the Integumentary System
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Which of the following correctly identifies the outermost layer of the skin?
A
Hypodermis
B
Subcutaneous fascia
C
Epidermis
D
Dermis
Verified step by step guidance1
Understand the structure of the skin: The skin is composed of three primary layers—epidermis (outermost layer), dermis (middle layer), and hypodermis (innermost layer, also called subcutaneous tissue).
Focus on the outermost layer: The epidermis is the layer exposed to the external environment and serves as a protective barrier against pathogens, UV radiation, and water loss.
Clarify the role of the hypodermis: The hypodermis, also known as subcutaneous fascia, is a deeper layer beneath the dermis that primarily consists of fat and connective tissue, providing insulation and cushioning.
Differentiate the dermis: The dermis lies directly beneath the epidermis and contains blood vessels, nerves, sweat glands, and hair follicles, playing a role in thermoregulation and sensation.
Conclude that the epidermis is the correct answer: Based on the anatomical hierarchy, the epidermis is the outermost layer of the skin, making it the correct identification in this context.
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