10 Questions
What is the main component of the outermost layer of the epidermis?
Dead cells containing keratin
What inhibits the growth of many microorganisms in perspiration?
Salt
What is the primary function of sebum secreted by oil glands?
Prevents skin and hair from drying out
What provides moisture and some nutrients for microbial growth on the skin?
Perspiration
Which part of the skin provides passageways for microorganisms to enter and penetrate deeper tissues?
Hair follicles, sweat-gland ducts, and oil gland ducts
What is the primary function of the stratum corneum in the epidermis?
To provide a waterproofing protein called keratin
What is the main purpose of sebum secreted by oil glands?
To prevent skin and hair from drying out
What inhibits many microorganisms in perspiration?
Salt
What provides passageways for microorganisms to enter and penetrate deeper tissues in the skin?
Hair follicles, sweat-gland ducts, and oil gland ducts
What is the composition of sebum secreted by oil glands?
A mixture of lipids, proteins, and salts
Study Notes
Skin Composition and Function
- The main component of the outermost layer of the epidermis is the stratum corneum.
- Perspiration, which is salty and acidic, inhibits the growth of many microorganisms.
- Sebum secreted by oil glands has a primary function of providing moisture and some nutrients for microbial growth on the skin.
- The primary function of sebum secreted by oil glands is to provide moisture and some nutrients for microbial growth on the skin.
- Sweat glands and hair follicles provide passageways for microorganisms to enter and penetrate deeper tissues in the skin.
- The primary function of the stratum corneum in the epidermis is to provide a barrier against environmental stressors.
- Perspiration, which is salty and acidic, inhibits many microorganisms, thereby preventing infection.
- Sebum secreted by oil glands is composed of a mixture of lipids, including triglycerides, wax esters, and squalene.
Test your knowledge of microbial diseases affecting the skin and eyes with this quiz. Learn about the structure and function of the skin as you explore the epidermis and dermis. Understand the layers of epithelial cells and their role in protecting the body from pathogens.
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