29 Questions
What is the function of melanin pigments in the human body?
Determines skin, hair, and eye color
What is the process called when cells change shape and chemical composition to become filled with keratin?
Keratinization
What is the name of the layer of skin where mitosis occurs?
Stratum basale
What is the function of dermal papillae?
Supplies the epidermis with nutrients and removes waste products
What is the name of the connective tissue found in the dermis?
Dense collagenous connective tissue
What is the name of the layer of skin that is most resistant to stretch along the cleavage lines?
Dermis
What is the main function of the subcutaneous tissue?
To attach the skin to underlying bones
What is the term for the bluish skin color caused by decreased blood oxygen?
Cyanosis
What is the site of hair cell formation?
Hair bulb
What is the function of the arrector pili muscles?
To contract and make hair stand on end
What is the pigment responsible for the yellow color in plants?
Carotene
What is the term for the congenital disorder of the capillaries in the dermis?
Birthmarks
What type of secretion do sebaceous glands use to release sebum?
Holocrine secretion
Which type of sweat glands are found in the palms and soles?
Eccrine sweat glands
What is the primary function of hair on the human head?
To act as an insulator
What is the function of sebum released by sebaceous glands?
To lubricate the hair and skin
What is the role of eyebrows in the human body?
To protect the eyes from foreign objects
What is the visible part of the nail?
Nail body
What is the function of sweat glands in the human body?
To remove excess water and salt from the body
What type of keratin is found in nails?
A type of hard keratin
What is the primary source of vitamin D in the human body?
Fatty fish
What is the function of ceruminous glands?
To produce cerumen (earwax)
What is the normal body temperature of a healthy human being?
37 degrees Celsius
What is the primary mechanism of heat loss from the human body?
Radiation
What is the primary origin of malignant melanoma?
Melanocytes
What happens to the amount of collagen in the dermis as we age?
It decreases
What is a common characteristic of skin that is exposed to sunlight?
It shows signs of aging more rapidly
What is the result of decreased sebaceous gland activity?
Skin becomes drier
What is the term for the areas where melanocyte numbers increase with age?
Age spots
Test your knowledge of the integumentary system, including its functions such as protection, sensation, and vitamin D production, as well as the structure of the skin, including the epidermis and keratinization.
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