Integumentary System Functions and Structure

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What is the function of melanin pigments in the human body?

Determines skin, hair, and eye color (correct)

Regulates body temperature

Helps in excretion

Provides structural strength to the skin

What is the process called when cells change shape and chemical composition to become filled with keratin?

Melanization

Mitosis

Keratinization (correct)

Desquamation

What is the name of the layer of skin where mitosis occurs?

Epidermis

Stratum corneum

Dermis

Stratum basale (correct)

What is the function of dermal papillae?

Supplies the epidermis with nutrients and removes waste products Signup and view all the answers

What is the name of the connective tissue found in the dermis?

Dense collagenous connective tissue Signup and view all the answers

What is the name of the layer of skin that is most resistant to stretch along the cleavage lines?

Dermis Signup and view all the answers

What is the main function of the subcutaneous tissue?

To attach the skin to underlying bones Signup and view all the answers

What is the term for the bluish skin color caused by decreased blood oxygen?

Cyanosis Signup and view all the answers

What is the site of hair cell formation?

Hair bulb Signup and view all the answers

What is the function of the arrector pili muscles?

To contract and make hair stand on end Signup and view all the answers

What is the pigment responsible for the yellow color in plants?

Carotene Signup and view all the answers

What is the term for the congenital disorder of the capillaries in the dermis?

Birthmarks Signup and view all the answers

What type of secretion do sebaceous glands use to release sebum?

Holocrine secretion Signup and view all the answers

Which type of sweat glands are found in the palms and soles?

Eccrine sweat glands Signup and view all the answers

What is the primary function of hair on the human head?

To act as an insulator Signup and view all the answers

What is the function of sebum released by sebaceous glands?

To lubricate the hair and skin Signup and view all the answers

What is the role of eyebrows in the human body?

To protect the eyes from foreign objects Signup and view all the answers

What is the visible part of the nail?

Nail body Signup and view all the answers

What is the function of sweat glands in the human body?

To remove excess water and salt from the body Signup and view all the answers

What type of keratin is found in nails?

A type of hard keratin Signup and view all the answers

What is the primary source of vitamin D in the human body?

Fatty fish Signup and view all the answers

What is the function of ceruminous glands?

To produce cerumen (earwax) Signup and view all the answers

What is the normal body temperature of a healthy human being?

37 degrees Celsius Signup and view all the answers

What is the primary mechanism of heat loss from the human body?

Radiation Signup and view all the answers

What is the primary origin of malignant melanoma?

Melanocytes Signup and view all the answers

What happens to the amount of collagen in the dermis as we age?

It decreases Signup and view all the answers

What is a common characteristic of skin that is exposed to sunlight?

It shows signs of aging more rapidly Signup and view all the answers

What is the result of decreased sebaceous gland activity?

Skin becomes drier Signup and view all the answers

What is the term for the areas where melanocyte numbers increase with age?

Age spots Signup and view all the answers