Integumentary system MCQs

We have provided 50 MCQs on Integumentary System MCQs, Unit-2, 1st semester, Human Anatomy and physiology, B. Pharm. We have covered following topics. Structure and functions of skin

MCQs on Integumentary system

What is the largest organ in the human body?

• A) Heart
• B) Liver
• C) Lungs
• D) Skin

Correct Answer: D) Skin

The outermost layer of the skin is called:

• A) Epidermis
• B) Dermis
• C) Hypodermis
• D) Subcutaneous tissue

Correct Answer: A) Epidermis

Which of the following is NOT a function of the skin?

• A) Temperature regulation
• B) Sensation
• C) Hormone production
• D) Protection against pathogens

Correct Answer: C) Hormone production

What pigment gives skin its color and provides some protection against UV radiation?

• A) Melatonin
• B) Hemoglobin
• C) Melanin
• D) Collagen

Correct Answer: C) Melanin

Which layer of the skin contains blood vessels, sweat glands, and hair follicles?

• A) Epidermis
• B) Dermis
• C) Hypodermis
• D) Subcutaneous tissue

Correct Answer: B) Dermis

What is the primary function of sebaceous glands in the skin?

• A) Production of sweat
• B) Production of oil (sebum)
• C) Production of melanin
• D) Production of collagen

Correct Answer: B) Production of oil (sebum)

What is the primary role of sweat glands in the skin?

• A) Regulating body temperature
• B) Producing melanin
• C) Nourishing hair follicles
• D) Lubricating joints

Correct Answer: A) Regulating body temperature

Which layer of the skin contains adipose (fat) tissue that serves as insulation and energy storage?

• A) Epidermis
• B) Dermis
• C) Hypodermis
• D) Subcutaneous tissue

Correct Answer: C) Hypodermis

What is the primary function of the arrector pili muscles associated with hair follicles?

• A) Sensing temperature changes
• B) Producing melanin
• C) Ejecting hair shafts
• D) Generating goosebumps

Correct Answer: D) Generating goosebumps

Which of the following is a function of the nails in the integumentary system?

• A) Temperature regulation
• B) Sensation
• C) Protection against UV radiation
• D) Manipulation and gripping objects

Correct Answer: D) Manipulation and gripping objects

What is the primary function of the stratum corneum in the epidermis?

• A) Sensation
• B) Barrier against pathogens and dehydration
• C) Production of melanin
• D) Temperature regulation

Correct Answer: B) Barrier against pathogens and dehydration

Which layer of the skin is responsible for the growth of hair and nails?

• A) Epidermis
• B) Dermis
• C) Hypodermis
• D) Subcutaneous tissue

Correct Answer: A) Epidermis

The sweat produced by eccrine sweat glands is primarily composed of:

• A) Water and electrolytes
• B) Sebum
• C) Melanin
• D) Blood plasma

Correct Answer: A) Water and electrolytes

Which component of the dermis provides the skin with its strength and elasticity?

• A) Blood vessels
• B) Sweat glands
• C) Collagen and elastin fibers
• D) Nerve endings

Correct Answer: C) Collagen and elastin fibers

What is the primary function of melanocytes in the epidermis?

• A) Temperature regulation
• B) Producing sweat
• C) Producing melanin pigment
• D) Nourishing hair follicles

Correct Answer: C) Producing melanin pigment

Which layer of the skin contains Pacinian corpuscles, specialized for detecting pressure and vibration?

• A) Epidermis
• B) Dermis
• C) Hypodermis
• D) Subcutaneous tissue

Correct Answer: B) Dermis

The subcutaneous tissue (hypodermis) primarily contains:

• A) Blood vessels and sweat glands
• B) Adipose (fat) tissue
• C) Collagen fibers
• D) Melanocytes

Correct Answer: B) Adipose (fat) tissue

Which type of sensory receptor in the skin is responsible for detecting changes in temperature?

• A) Meissner’s corpuscles
• B) Ruffini endings
• C) Merkel cells
• D) Thermoreceptors

Correct Answer: D) Thermoreceptors

What is the function of sebum produced by sebaceous glands?

• A) Protection against UV radiation
• B) Temperature regulation
• C) Lubrication of skin and hair
• D) Production of melanin

Correct Answer: C) Lubrication of skin and hair

The primary function of the integumentary system is:

• A) Nutrient storage
• B) Sensation
• C) Protection
• D) Gas exchange

Correct Answer: C) Protection

Which layer of the skin is responsible for producing new skin cells through cell division?

• A) Epidermis
• B) Dermis
• C) Hypodermis
• D) Subcutaneous tissue

What is the primary function of blood vessels in the dermis?

• A) Production of sweat
• B) Regulation of body temperature
• C) Production of melanin
• D) Production of sebum

Correct Answer: B) Regulation of body temperature

Which skin function involves the synthesis of vitamin D when exposed to ultraviolet (UV) light?

A) Thermoregulation

• B) Sensation
• C) Excretion
• D) Vitamin D synthesis

Correct Answer: D) Vitamin D synthesis

What is the purpose of the subcutaneous tissue (hypodermis) beneath the skin?

• A) Attachment to underlying structures
• B) Protection against UV radiation
• C) Production of sweat
• D) Nourishing hair follicles

Correct Answer: A) Attachment to underlying structures

What type of sensation is primarily detected by Merkel cells in the epidermis?

• A) Pressure
• B) Temperature
• C) Pain
• D) Itch

Correct Answer: A) Pressure

Which skin function involves the elimination of waste products, including salts and water?

• A) Thermoregulation
• B) Sensation
• C) Excretion
• D) Protection

Correct Answer: C) Excretion

The skin plays a role in protecting against harmful UV radiation by producing:

• A) Melatonin
• B) Melanin
• C) Sebum
• D) Collagen

Correct Answer: B) Melanin

Which of the following is a function of the arrector pili muscles in the skin?

• A) Producing sweat
• B) Ejecting hair shafts
• C) Generating heat
• D) Producing collagen

Correct Answer: B) Ejecting hair shafts

What is the primary role of the stratum basale in the epidermis?

• A) Providing sensation
• B) Producing new skin cells
• C) Regulating body temperature
• D) Secreting oil (sebum)

Correct Answer: B) Producing new skin cells

The primary function of sweat glands in the skin is:

• A) Lubrication
• B) Temperature regulation and waste excretion
• C) Production of melanin
• D) Protection against UV radiation

Correct Answer: B) Temperature regulation and waste excretion

Which layer of the skin contains immune cells that help protect against pathogens?

• A) Epidermis
• B) Dermis
• C) Hypodermis
• D) Subcutaneous tissue

Correct Answer: A) Epidermis

What is the primary role of Meissner’s corpuscles in the skin?

• A) Detecting pain
• B) Detecting light touch and pressure
• C) Detecting temperature changes
• D) Producing sweat

Correct Answer: B) Detecting light touch and pressure

Which skin function involves the production of oil (sebum) to moisturize and protect the skin and hair?

• A) Thermoregulation
• B) Sensation
• C) Lubrication and protection
• D) Vitamin D synthesis

Correct Answer: C) Lubrication and protection

The epidermis is primarily composed of which type of cells?

• A) Keratinocytes
• B) Fibroblasts
• C) Adipocytes
• D) Chondrocytes

Correct Answer: A) Keratinocytes

What is the primary function of Ruffini endings in the dermis?

• A) Detecting pressure and vibration
• B) Detecting light touch and fine texture
• C) Detecting temperature changes
• D) Producing sweat

Correct Answer: A) Detecting pressure and vibration

Which skin function involves the regulation of body temperature through sweating and blood vessel dilation?

• A) Thermoregulation
• B) Sensation
• C) Lubrication
• D) Vitamin D synthesis

Correct Answer: A) Thermoregulation

The skin’s ability to regenerate and repair itself is primarily attributed to the presence of which cells?

• A) Melanocytes
• B) Fibroblasts
• C) Macrophages
• D) Adipocytes

Correct Answer: B) Fibroblasts

Which skin function is responsible for detecting extreme temperature changes and potentially harmful stimuli?

• A) Thermoregulation
• B) Sensation
• C) Lubrication
• D) Vitamin D synthesis

Correct Answer: B) Sensation

The subcutaneous tissue (hypodermis) contains a high concentration of which type of tissue?

• A) Muscle tissue
• B) Connective tissue
• C) Nervous tissue
• D) Epithelial tissue

Correct Answer: B) Connective tissue

What is the primary role of Pacinian corpuscles in the dermis?

• A) Detecting pressure and vibration
• B) Detecting light touch and fine texture
• C) Detecting temperature changes
• D) Producing sweat

Correct Answer: A) Detecting pressure and vibration

The primary function of the subcutaneous tissue (hypodermis) includes:

• A) Producing sweat
• B) Temperature regulation
• C) Providing a physical barrier
• D) Insulation and energy storage

Correct Answer: D) Insulation and energy storage

What is the main structural protein found in the dermis that provides strength and resilience to the skin?

• A) Melanin
• B) Collagen
• C) Keratin
• D) Sebum

Correct Answer: B) Collagen

What is the primary role of Meibomian glands in the integumentary system?

• A) Regulating body temperature
• B) Producing tears
• C) Lubricating the eyes
• D) Producing sweat

Correct Answer: C) Lubricating the eyes

Which type of sweat glands are responsible for producing odorless sweat that is primarily composed of water, electrolytes, and waste products?

• A) Eccrine sweat glands
• B) Apocrine sweat glands
• C) Sebaceous glands
• D) Merocrine sweat glands

Correct Answer: A) Eccrine sweat glands

The primary function of the arrector pili muscles is to:

• A) Produce melanin
• B) Eject hair shafts
• C) Generate goosebumps
• D) Regulate body temperature

Correct Answer: C) Generate goosebumps

Which skin layer plays a crucial role in maintaining skin elasticity and preventing wrinkles?

• A) Epidermis
• B) Dermis
• C) Hypodermis
• D) Subcutaneous tissue

Correct Answer: B) Dermis

The integumentary system helps protect the body from harmful external factors such as:

• A) Blood clotting
• B) Digestion
• C) Infection
• D) Respiration

Correct Answer: C) Infection

The skin plays a vital role in synthesizing vitamin D, which is essential for:

• A) Blood clotting
• B) Calcium absorption and bone health
• C) Digestion
• D) Temperature regulation

Correct Answer: B) Calcium absorption and bone health

The epidermis is primarily composed of several layers of cells called:

• A) Fibroblasts
• B) Melanocytes
• C) Keratinocytes
• D) Sebocytes

Correct Answer: C) Keratinocytes

Which skin layer contains blood vessels that help regulate body temperature by dilating or constricting in response to environmental changes?

• A) Epidermis
• B) Dermis
• C) Hypodermis
• D) Subcutaneous tissue

Correct Answer: B) Dermis