Integumentary System Multiple Choice Question
Integumentary System Multiple Choice Question
Here are 50 multiple-choice questions (MCQs) about the integumentary system, each followed by the correct answer:
What is the largest organ of the human body?
a) Liver
b) Brain
c) Heart
d) Skin
Answer: d) Skin
Which layer of the skin is the outermost layer?
a) Dermis
b) Hypodermis
c) Epidermis
d) Subcutaneous
Answer: c) Epidermis
Which protein is the main component of the outer layer of the skin?
a) Collagen
b) Elastin
c) Keratin
d) Melanin
Answer: c) Keratin
What is the primary function of melanocytes?
a) Produce keratin
b) Produce collagen
c) Produce melanin
d) Produce sweat
Answer: c) Produce melanin
Which layer of the skin contains blood vessels, nerves, and hair follicles?
a) Epidermis
b) Dermis
c) Hypodermis
d) Stratum corneum
Answer: b) Dermis
What type of glands are responsible for producing sweat?
a) Sebaceous glands
b) Apocrine glands
c) Eccrine glands
d) Ceruminous glands
Answer: c) Eccrine glands
Which layer of the epidermis is responsible for cell division and replacement?
a) Stratum corneum
b) Stratum lucidum
c) Stratum granulosum
d) Stratum basale
Answer: d) Stratum basale
What is the primary function of sebaceous glands?
a) Produce sweat
b) Produce sebum (oil)
c) Produce melanin
d) Produce keratin
Answer: b) Produce sebum (oil)
Which pigment is responsible for skin color?
a) Keratin
b) Melanin
c) Hemoglobin
d) Myoglobin
Answer: b) Melanin
What is the main function of the hypodermis (subcutaneous layer)?
a) Provide insulation and cushioning
b) Produce melanin
c) Absorb nutrients
d) Regulate body temperature
Answer: a) Provide insulation and cushioning
Which vitamin is synthesized by the skin when exposed to sunlight?
a) Vitamin A
b) Vitamin B
c) Vitamin C
d) Vitamin D
Answer: d) Vitamin D
Which part of the hair is embedded in the skin?
a) Hair shaft
b) Hair follicle
c) Hair bulb
d) Hair cuticle
Answer: b) Hair follicle
What is the primary role of the arrector pili muscles?
a) Produce sweat
b) Produce sebum
c) Cause hair to stand on end (goosebumps)
d) Protect against UV radiation
Answer: c) Cause hair to stand on end (goosebumps)
What type of cells make up the majority of the epidermis?
a) Melanocytes
b) Keratinocytes
c) Fibroblasts
d) Langerhans cells
Answer: b) Keratinocytes
Which layer of the epidermis is only found in thick skin, such as the palms and soles?
a) Stratum corneum
b) Stratum lucidum
c) Stratum granulosum
d) Stratum spinosum
Answer: b) Stratum lucidum
What is the function of Langerhans cells in the skin?
a) Produce melanin
b) Produce keratin
c) Act as immune cells
d) Produce sweat
Answer: c) Act as immune cells
Which layer of the dermis contains the most collagen and elastin fibers?
a) Papillary layer
b) Reticular layer
c) Stratum basale
d) Stratum corneum
Answer: b) Reticular layer
What type of gland produces earwax?
a) Sebaceous glands
b) Apocrine glands
c) Eccrine glands
d) Ceruminous glands
Answer: d) Ceruminous glands
Which condition is characterized by the inflammation of the skin?
a) Eczema
b) Psoriasis
c) Melanoma
d) Vitiligo
Answer: a) Eczema
What is the main function of the stratum corneum?
a) Protect underlying tissues from infection, dehydration, and chemicals
b) Produce melanin
c) Produce sebum
d) Generate new skin cells
Answer: a) Protect underlying tissues from infection, dehydration, and chemicals
Which protein gives the skin its strength and elasticity?
a) Keratin
b) Collagen
c) Melanin
d) Hemoglobin
Answer: b) Collagen
What is the term for the natural shedding of the outer layer of the skin?
a) Keratinization
b) Desquamation
c) Ossification
d) Calcification
Answer: b) Desquamation
Which layer of the skin is primarily involved in thermoregulation?
a) Epidermis
b) Dermis
c) Hypodermis
d) Stratum lucidum
Answer: c) Hypodermis
What is the primary role of Merkel cells in the skin?
a) Produce keratin
b) Detect touch sensations
c) Produce melanin
d) Produce sweat
Answer: b) Detect touch sensations
Which type of sweat gland is mainly found in the armpits and groin area and becomes active during puberty?
a) Sebaceous glands
b) Apocrine glands
c) Eccrine glands
d) Ceruminous glands
Answer: b) Apocrine glands
What is the term for the process by which the skin produces new cells to replace old, dead ones?
a) Desquamation
b) Keratinization
c) Regeneration
d) Differentiation
Answer: b) Keratinization
Which layer of the epidermis is known for being the thickest and providing most of the barrier function of the skin?
a) Stratum basale
b) Stratum spinosum
c) Stratum granulosum
d) Stratum corneum
Answer: d) Stratum corneum
Which structure in the skin is responsible for producing hair?
a) Sebaceous gland
b) Sweat gland
c) Hair follicle
d) Dermal papilla
Answer: c) Hair follicle
What is the main function of the integumentary system?
a) Protection, sensation, and temperature regulation
b) Digestion, absorption, and elimination
c) Circulation, respiration, and metabolism
d) Hormone production and regulation
Answer: a) Protection, sensation, and temperature regulation
Which skin condition is caused by a bacterial infection of hair follicles or sebaceous glands?
a) Eczema
b) Psoriasis
c) Acne
d) Melanoma
Answer: c) Acne
What type of sensory receptors are found in the skin and are responsible for detecting pain?
a) Mechanoreceptors
b) Thermoreceptors
c) Nociceptors
d) Photoreceptors
Answer: c) Nociceptors
Which layer of the epidermis contains cells that appear spiny due to the presence of desmosomes?
a) Stratum corneum
b) Stratum lucidum
c) Stratum granulosum
d) Stratum spinosum
Answer: d) Stratum spinosum
What is the name of the condition characterized by the loss of skin pigmentation in patches?
a) Melanoma
b) Vitiligo
c) Eczema
d) Psoriasis
Answer: b) Vitiligo
Which vitamin is essential for the synthesis of collagen in the skin?
a) Vitamin A
b) Vitamin B
c) Vitamin C
d) Vitamin D
Answer: c) Vitamin C
Which layer of the skin contains the most sensory receptors?
a) Epidermis
b) Dermis
c) Hypodermis
d) Stratum corneum
Answer: b) Dermis
What is the main function of melanin in the skin?
a) Provide structural support
b) Protect against UV radiation
c) Produce sweat
d) Detect touch sensations
Answer: b) Protect against UV radiation
Which condition is caused by an overproduction of sebum and characterized by oily skin and dandruff?
a) Acne
b) Psoriasis
c) Seborrheic dermatitis
d) Eczema
Answer: c) Seborrheic dermatitis
Which type of skin cancer is the most dangerous and can spread to other parts of the body?
a) Basal cell carcinoma
b) Squamous cell carcinoma
c) Melanoma
d) Actinic keratosis
Answer: c) Melanoma
What is the name of the fine, soft hair that covers the body of a fetus and sometimes newborns?
a) Vellus hair
b) Terminal hair
c) Lanugo
d) Alopecia
Answer: c) Lanugo
Which layer of the epidermis is immediately superficial to the stratum granulosum?
a) Stratum corneum
b) Stratum lucidum
c) Stratum spinosum
d) Stratum basale
Answer: a) Stratum corneum
Which type of burn affects only the epidermis and causes redness and pain but no blisters?
a) First-degree burn
b) Second-degree burn
c) Third-degree burn
d) Fourth-degree burn
Answer: a) First-degree burn
What is the term for the area where a nail meets the skin at its proximal end?
a) Cuticle
b) Lunula
c) Nail bed
d) Nail matrix
Answer: a) Cuticle
Which skin layer is directly responsible for fingerprints?
a) Epidermis
b) Dermis
c) Hypodermis
d) Stratum corneum
Answer: b) Dermis
Which part of the hair is visible above the skin surface?
a) Hair bulb
b) Hair follicle
c) Hair shaft
d) Hair root
Answer: c) Hair shaft
Which type of gland produces an oily secretion that helps to keep the skin and hair moisturized?
a) Sweat glands
b) Sebaceous glands
c) Ceruminous glands
d) Apocrine glands
Answer: b) Sebaceous glands
What is the term for the thickened, hardened area of skin that forms in response to repeated pressure or friction?
a) Callus
b) Blister
c) Wart
d) Ulcer
Answer: a) Callus
Which layer of the skin is primarily composed of adipose tissue?
a) Epidermis
b) Dermis
c) Hypodermis
d) Stratum spinosum
Answer: c) Hypodermis
What is the medical term for hair loss?
a) Alopecia
b) Dermatitis
c) Seborrhea
d) Xerosis
Answer: a) Alopecia
Which condition is characterized by thick, scaly patches of skin that are red and itchy?
a) Psoriasis
b) Eczema
c) Acne
d) Melanoma
Answer: a) Psoriasis
What is the term for the protective, outermost layer of the hair shaft?
a) Cortex
b) Medulla
c) Cuticle
d) Follicle
Answer: c) Cuticle