[01] Structure and Function of the Skin Flashcards
What are the three main layers of the skin?
- Epidermis
- Dermis
- Hypodermis
What is the epidermis?
The outermost layer of the skin, primarily made up of keratinocytes
What cells are primarily found in the epidermis?
Keratinocytes
What is the function of keratinocytes?
Produce keratin, a protein that gives skin its toughness and waterproof capabilities
What is the dermis?
The middle layer of the skin, containing blood vessels, nerves, and glands
What structures are found in the dermis?
- Blood vessels
- Nerve fibers
- Sweat glands
- Sebaceous glands
- Hair follicles
What is the hypodermis?
The deepest layer of the skin, mainly composed of adipose tissue
What is the function of the hypodermis?
Provides insulation and cushioning for the body
What is the role of sweat glands?
They help regulate body temperature and remove waste products by producing sweat
What is the function of sebaceous glands?
Produce sebum, an oily substance that helps keep the skin and hair moisturized
What are the primary functions of the skin?
- Protection
- Regulation of body temperature
- Sensation
- Metabolism
- Communication
How does the skin provide protection?
It serves as a physical barrier against environmental hazards, including harmful microbes and UV radiation
How does the skin regulate body temperature?
Through sweat production and blood vessel dilation or constriction
How does the skin contribute to sensation?
Contains nerve receptors that respond to touch, pressure, temperature, and pain
How does the skin contribute to metabolism?
Participates in the synthesis of vitamin D from sunlight
