#1
Which layer of the skin is responsible for producing sweat?
Dermis
ExplanationThe dermis contains sweat glands that produce sweat for temperature regulation.
#2
What pigment is responsible for the color of human skin?
Melanin
ExplanationMelanin gives color to the skin and provides protection against UV radiation.
#3
What is the primary function of melanin in the skin?
Absorb UV radiation
ExplanationMelanin in the skin absorbs UV radiation to protect against its harmful effects.
#4
What is the primary function of sweat glands in the skin?
Regulate body temperature through evaporation
ExplanationSweat glands regulate body temperature by producing sweat that evaporates and cools the skin.
#5
Which protein is the primary component of hair and nails?
Keratin
ExplanationKeratin is the primary protein in hair and nails.
#6
What is the function of eccrine glands in the skin?
Produce sweat to regulate body temperature
ExplanationEccrine glands produce sweat to regulate body temperature through evaporation.
#7
Which of the following is NOT a function of the integumentary system?
Producing insulin
ExplanationThe integumentary system is not involved in insulin production; its main functions include protection and temperature regulation.
#8
What is the medical term for the outermost layer of the skin?
Epidermis
ExplanationThe epidermis is the outer layer of the skin.
#9
What is the function of sebaceous glands in the skin?
Produce oil to moisturize and waterproof the skin
ExplanationSebaceous glands produce oil (sebum) to moisturize and waterproof the skin.
#10
Which layer of the skin contains blood vessels, nerve endings, and hair follicles?
Dermis
ExplanationThe dermis contains blood vessels, nerve endings, and hair follicles.
#11
Which vitamin is synthesized in the skin upon exposure to sunlight?
Vitamin D
ExplanationThe skin synthesizes Vitamin D upon exposure to sunlight.
#12
What is the primary function of the hypodermis (subcutaneous layer) in the skin?
Thermal insulation and energy storage
ExplanationThe hypodermis provides thermal insulation and serves as an energy storage layer in the skin.
#13
Which of the following cells in the epidermis is responsible for producing melanin?
Melanocytes
ExplanationMelanocytes are cells in the epidermis that produce melanin.
#14
What is the function of arrector pili muscles in the integumentary system?
Contracting to raise hairs and trapping heat
ExplanationArrector pili muscles contract to raise hairs and trap heat.
#15
Which layer of the skin contains connective tissue, blood vessels, and fat cells?
Hypodermis
ExplanationThe hypodermis contains connective tissue, blood vessels, and fat cells.
#16
What is the term for the shedding of dead skin cells from the outer layer of the epidermis?
Desquamation
ExplanationDesquamation is the shedding of dead skin cells from the outer layer of the epidermis.
#17
What is the function of Merkel cells in the skin?
Detect light touch and pressure sensations
ExplanationMerkel cells in the skin detect light touch and pressure sensations.
#18
What is the primary function of Langerhans cells in the skin?
Immune defense
ExplanationLangerhans cells in the skin play a key role in immune defense.