20 Questions
Which of the following is the primary function of the skin?
Prevents the entry of disease-causing microbes
What is the largest organ of the human body?
Skin
Which layer of the skin is composed of stratified squamous epithelium?
Epidermis
What is the main protein found in the cells of the epidermis?
Keratin
Which layer of the epidermis provides the skin's nonspecific defense against invasive pathogens?
Stratum corneum
Which layer of the skin contains blood vessels and nerve cells?
Dermis
Which of the following structures are NOT found in the dermis?
Blood vessels
What do oil glands in the skin produce?
Oils to keep the skin and hair flexible
What is the function of sweat glands in the skin?
Regulate body temperature
Which layer of the skin is vascular?
Dermis
Which glands are responsible for secreting oil onto the hair shaft?
Sebaceous glands
Where are sebaceous glands located?
Wherever there is hair
What is the main function of sweat glands?
Producing sweat in response to internal temperature
What happens when blood vessels in the dermis dilate?
A larger volume of blood flows from the core of the body to the skin
What is the function of the hair follicle?
To produce a hair shaft
What is the innermost layer of the hair shaft responsible for?
Coloring the hair
What happens when the blood flow through the bulb of the hair follicle decreases?
The hair shaft is lost
What are nails made of?
Keratinized cells
Where do nails arise from?
The lunular at the base of the nail bed
What is the cuticle?
A layer of epidermis covering the base of the nail
Test your knowledge about the skin and its important functions in the human body. Learn about its role as a physical barrier, protection against pathogens, regulation of water content and temperature, and production of vitamin D.
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