exam 3 bio251 /Final Exam [2025-2026]
comprehensive questions | FREQUENTLY MOST
TESTED QUESTIONS AND VERIFIED SOLUTIONS/GET
IT 100% ACCURATE!!
What is the structure of the skin? - answer--epidermis, dermis,
hypodermis
What is accessory structures for the skin? - answer--Hair, nails, oil
glands and sweat glands
Whats the skin functions? - answer--protection, sensations, synthesis
vitamin D, not taking in or out water, thermoregulation and non verbal
communication
What cells is the epidermis comprised of? - answer--Stratified
squamous epithelium, keratinocytes, melanocytes, langerhan cells, and
merkel cells.
What is the dermis composed of? - answer--collagen, elastic and
reticular fibers
What is the cutaneous membrane? - answer--dermis + epidermis
,The dermis has what two layers? - answer--papillary and reticular
The dermis has what within the layer? - answer--blood vessels, nerve
endings, cutaneous glands, hair follicle, and hair roots.
What is the dermal papillae? - answer--projections from the dermis
What is the epidermal ridges? - answer--The grooves that form
fingerprints
What is the papillary layer? - answer--Thin first layer, made of areolar
tissue and rich in blood.
What is the reticular layer? - answer--Thick layer, irregular dense tissue,
collagen-elastic fibers, hair follicles, hair roots, nerve endings,
cutaneous glands, AND STRETCH MARKS
What is the hypodermics composed of? - answer--loose dense tissue of
adipose-areolar, vascularized, connects skin to fascia, and holds fat.
What is keratinocytes? - answer--produces keratin to toughen up the
skin and retains water.
,What is melanocytes? - answer--produce the pigment melanin and
protects from UV
What is a Langerhans cell? - answer--immune response to microbes and
easily damaged by UV light.
Where is langerhans cell found? - answer--Between stratum spinosum
and granslum
What is merkel cells? - answer--receptors for touch
Whats in the stratum basale? - answer--merkel cells and melanocytes
What is the function for papillary layer? - answer--supplies nutrients to
the epidermis and regulates temperature
What is the function for reticular layer? - answer--full of fibers for
strength by elastic fibers and has hair follicles.
What doe collagen and elastic fibers do? - answer--tensile strength,
resist pulling and stretching
, What is fibers produced by? - answer--fibroblast cells, and form matrix
of dermis
What is adipocytes? - answer--produce fat, connects with hypodermis
Whats is the function of hypodermis? - answer--Protects and pads
underlying tissue, stores energy, provides insulation
Where is the Hair shaft - answer--part of hair above skin
Where is the Hair root? - answer--portion below the skin
Where is the hair bulb? - answer--ending of the hair root
What is a hair follicle? - answer--Slender filament of keratinized cells,
grows in diagonal tube
Which of the following is NOT part of the Integumentary System?
Cornea
Hair
Epidermis
Dermis
comprehensive questions | FREQUENTLY MOST
TESTED QUESTIONS AND VERIFIED SOLUTIONS/GET
IT 100% ACCURATE!!
What is the structure of the skin? - answer--epidermis, dermis,
hypodermis
What is accessory structures for the skin? - answer--Hair, nails, oil
glands and sweat glands
Whats the skin functions? - answer--protection, sensations, synthesis
vitamin D, not taking in or out water, thermoregulation and non verbal
communication
What cells is the epidermis comprised of? - answer--Stratified
squamous epithelium, keratinocytes, melanocytes, langerhan cells, and
merkel cells.
What is the dermis composed of? - answer--collagen, elastic and
reticular fibers
What is the cutaneous membrane? - answer--dermis + epidermis
,The dermis has what two layers? - answer--papillary and reticular
The dermis has what within the layer? - answer--blood vessels, nerve
endings, cutaneous glands, hair follicle, and hair roots.
What is the dermal papillae? - answer--projections from the dermis
What is the epidermal ridges? - answer--The grooves that form
fingerprints
What is the papillary layer? - answer--Thin first layer, made of areolar
tissue and rich in blood.
What is the reticular layer? - answer--Thick layer, irregular dense tissue,
collagen-elastic fibers, hair follicles, hair roots, nerve endings,
cutaneous glands, AND STRETCH MARKS
What is the hypodermics composed of? - answer--loose dense tissue of
adipose-areolar, vascularized, connects skin to fascia, and holds fat.
What is keratinocytes? - answer--produces keratin to toughen up the
skin and retains water.
,What is melanocytes? - answer--produce the pigment melanin and
protects from UV
What is a Langerhans cell? - answer--immune response to microbes and
easily damaged by UV light.
Where is langerhans cell found? - answer--Between stratum spinosum
and granslum
What is merkel cells? - answer--receptors for touch
Whats in the stratum basale? - answer--merkel cells and melanocytes
What is the function for papillary layer? - answer--supplies nutrients to
the epidermis and regulates temperature
What is the function for reticular layer? - answer--full of fibers for
strength by elastic fibers and has hair follicles.
What doe collagen and elastic fibers do? - answer--tensile strength,
resist pulling and stretching
, What is fibers produced by? - answer--fibroblast cells, and form matrix
of dermis
What is adipocytes? - answer--produce fat, connects with hypodermis
Whats is the function of hypodermis? - answer--Protects and pads
underlying tissue, stores energy, provides insulation
Where is the Hair shaft - answer--part of hair above skin
Where is the Hair root? - answer--portion below the skin
Where is the hair bulb? - answer--ending of the hair root
What is a hair follicle? - answer--Slender filament of keratinized cells,
grows in diagonal tube
Which of the following is NOT part of the Integumentary System?
Cornea
Hair
Epidermis
Dermis
