NURS 617 INTEGUMENTARY LO 1& 2 EXAM 180
QUESTIONS & CORRECT ANSWERS LATEST 2025
What is the largest organ in the body, comprising approximately 20% of body
weight? - ANSWER-skin
What is the primary function of the skin? - ANSWER-protect the body
How often does the epidermis renew? - ANSWER-every 30 days
The process by which keratinocytes (primary cells of the epidermis) mature and
produce keratin (tough, protective protein)- forming a lipid-rich layer in the
epidermis (stratum corneum), reducing water loss and ensuring hydration (occurs
in the epidermis) - ANSWER-keratinization (cornification)
What are the three types of tissue that make the dermis? - ANSWER-collagen,
elastin, reticulum
What layer of the dermis are rete pegs located? - ANSWER-papillary layer
Which layer of the skin contains adipose tissue that acts as an insulator- reducing
heat loss? - ANSWER-hypodermis (subcutaneous layer)
What describe the finger-like projections that extend from the epithelium into the
connective tissue of the skin and oral mucosa? - ANSWER-rete pegs
,Which glands secrete sebum- forming an acidic layer on the skin (pH 4-6) and
deterring microbial growth? - ANSWER-sebaceous glands
Which specialized cells in the epidermis act as sensory receptors- detecting light
pressure and touch for protection and environmental awareness? - ANSWER-
Merkel cells
What process of the skin is essential in maintaining a stable internal
environment? - ANSWER-thermoregulation
Which sweat gland?
-found throughout the body, especially the palms and soles
-regulate body temperature through sweat and evaporation - ANSWER-eccrine
sweat glands
Which sweat gland?
-found near hair follicles in areas like the scalp and axilla
-produce more sweat than eccrine glands
-are responsible for body odor - ANSWER-apocrine sweat glands
When the body is overheated, blood vessels in the _____________ dilate,
increasing blood flow to the skin's surface to release heat. - ANSWER-papillary
capillaries (blood supply to the skin is concentrated in the papillary capillaries of
the dermis)
,What direct connection between a small artery and vein (in the dermis) helps
regulate body temperature by controlling heat loss through variations in skin
blood flow (vasoconstriction, vasodilation, sweat evaporation)? - ANSWER-
arteriovenous anastomosis
What system regulates vasoconstriction and vessel dilation in hear-bearing skin
through alpha adrenergic receptors? - ANSWER-sympathetic nervous system
True or False?
The skin's lymphatic vessels begin in the papillary dermis and drain into
subcutaneous trunks- removing cells, proteins, and immune mediators. -
ANSWER-true
Innate Immunity or Adaptive Immunity?
-physical and chemical barriers block pathogen entry
-normal microbiota on the skin compete with pathogens, preventing overgrowth -
ANSWER-innate immunity
Innate Immunity or Adaptive Immunity?
-contains Langerhans Cells in the epidermis
-dermal immune cells like mast cells release histamine, which aids in
hypersensitivity reactions - ANSWER-adaptive immunity
, Which vitamin does the skin activate upon exposure to UV light- modulating
immune function and aiding calcium metabolism? - ANSWER-vitamin D
Specialized Cells of the Epidermis:
found throughout all layers of the epidermis; originate in the stratum basale and
migrate upward to the stratum corneum - ANSWER-keratinocytes
Specialized Cells of the Epidermis:
produce keratin- a tough, fibrous protein essential for skin strength and resilience
- ANSWER-keratinocytes
Specialized Cells of the Epidermis:
undergo keratinization (cornification) as they migrate upward - ANSWER-
keratinocytes
Specialized Cells of the Epidermis:
protect against mechanical stress, microbial invasion, and environmental damage;
form part of the skin's waterproof barrier - ANSWER-keratinocytes
Specialized Cells of the Epidermis:
QUESTIONS & CORRECT ANSWERS LATEST 2025
What is the largest organ in the body, comprising approximately 20% of body
weight? - ANSWER-skin
What is the primary function of the skin? - ANSWER-protect the body
How often does the epidermis renew? - ANSWER-every 30 days
The process by which keratinocytes (primary cells of the epidermis) mature and
produce keratin (tough, protective protein)- forming a lipid-rich layer in the
epidermis (stratum corneum), reducing water loss and ensuring hydration (occurs
in the epidermis) - ANSWER-keratinization (cornification)
What are the three types of tissue that make the dermis? - ANSWER-collagen,
elastin, reticulum
What layer of the dermis are rete pegs located? - ANSWER-papillary layer
Which layer of the skin contains adipose tissue that acts as an insulator- reducing
heat loss? - ANSWER-hypodermis (subcutaneous layer)
What describe the finger-like projections that extend from the epithelium into the
connective tissue of the skin and oral mucosa? - ANSWER-rete pegs
,Which glands secrete sebum- forming an acidic layer on the skin (pH 4-6) and
deterring microbial growth? - ANSWER-sebaceous glands
Which specialized cells in the epidermis act as sensory receptors- detecting light
pressure and touch for protection and environmental awareness? - ANSWER-
Merkel cells
What process of the skin is essential in maintaining a stable internal
environment? - ANSWER-thermoregulation
Which sweat gland?
-found throughout the body, especially the palms and soles
-regulate body temperature through sweat and evaporation - ANSWER-eccrine
sweat glands
Which sweat gland?
-found near hair follicles in areas like the scalp and axilla
-produce more sweat than eccrine glands
-are responsible for body odor - ANSWER-apocrine sweat glands
When the body is overheated, blood vessels in the _____________ dilate,
increasing blood flow to the skin's surface to release heat. - ANSWER-papillary
capillaries (blood supply to the skin is concentrated in the papillary capillaries of
the dermis)
,What direct connection between a small artery and vein (in the dermis) helps
regulate body temperature by controlling heat loss through variations in skin
blood flow (vasoconstriction, vasodilation, sweat evaporation)? - ANSWER-
arteriovenous anastomosis
What system regulates vasoconstriction and vessel dilation in hear-bearing skin
through alpha adrenergic receptors? - ANSWER-sympathetic nervous system
True or False?
The skin's lymphatic vessels begin in the papillary dermis and drain into
subcutaneous trunks- removing cells, proteins, and immune mediators. -
ANSWER-true
Innate Immunity or Adaptive Immunity?
-physical and chemical barriers block pathogen entry
-normal microbiota on the skin compete with pathogens, preventing overgrowth -
ANSWER-innate immunity
Innate Immunity or Adaptive Immunity?
-contains Langerhans Cells in the epidermis
-dermal immune cells like mast cells release histamine, which aids in
hypersensitivity reactions - ANSWER-adaptive immunity
, Which vitamin does the skin activate upon exposure to UV light- modulating
immune function and aiding calcium metabolism? - ANSWER-vitamin D
Specialized Cells of the Epidermis:
found throughout all layers of the epidermis; originate in the stratum basale and
migrate upward to the stratum corneum - ANSWER-keratinocytes
Specialized Cells of the Epidermis:
produce keratin- a tough, fibrous protein essential for skin strength and resilience
- ANSWER-keratinocytes
Specialized Cells of the Epidermis:
undergo keratinization (cornification) as they migrate upward - ANSWER-
keratinocytes
Specialized Cells of the Epidermis:
protect against mechanical stress, microbial invasion, and environmental damage;
form part of the skin's waterproof barrier - ANSWER-keratinocytes
Specialized Cells of the Epidermis:
