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Integumentary P1 Frida Hernandez - Coggle Diagram
Integumentary
P1
Frida Hernandez
Layers of The Skin
What is the skin?
The skin is the largest organ in the body. It makes up the integumentary
system. It is also a barrier for internal and external enviornment
Skin Color
Everyone has the same amounts of Melanocytes. Skin color is gentically determined. Exposure to uv lights may darken skin
Pinkish color is caused by hemoglobin, poorly oxygenated blood makes it blue, while yellow is caused by liver disease
The Epidermis
Consists of stratified squamous epithelium. Lacks blood vessels.
4 layers in most areas, but 5 in thick skin
Protects against water loss,
mechanical injury, chemicals, and microorganism
Melanocytes
is a special cell found in the deepest layer of the dermis and epidermis; it produces melanin; protects against UV; skin and hair color
Basal cells are older skins; Keratinization migrates towards the top
Stratum basale
is the deepest
layer (1)
Stratum corneum
is the outermost layer with flattened keratinized
cells (3)
Stratum lucidum
is the layer between the stratum granulosum and
the stratum corneum (4)
Stratum granulosum
(2)
Dermis
Binds the epidermis to underlying tissues
Creates the ridges in fingerprints. Is the toughness and elastic in the palm, carries nutruients, and contains nerve fibers, sensory receptors, hair follicles,
sebaceous glands, and sweat glands
Epidermal
Derivatives / Nails
Glands
Sebaceous glands is asscoiated with hair follicles and secrete oil; sebum
Sweat (sudoriferous) -
Eccrine
: respond to body temperature; more abundant type; many found on forehead, neck, back
Apocrine
: active at puberty; respond to fear, emotional upset, pain, or sexual arousal; most numerous in axilla and groin; sweat contains proteins & fats that produce body odor
Ceruminous glands
secretes wax in the ear canal
Mammary glands
secretes milk to nourish a baby
Nails
Protective covering ontop of the finger / toes.
Lunula
: Moon-shaped sturcture at the base of the nail
Hair
Found nearly everywhere except
palms, soles, lips, nipples, and portions of external genitalia
Arrector Pili Muscle
is when in response to cold temperature or emotional upset, it causes goose bumps
Everything starts at the hair follicle, than followed by the hair root, and finally the hair shaft
Skin Functions
Protects the underlying tissues, houses sensory receptors, makes vitamin D, Body temp regulation, and heals wounds
Body Temp
Maintains metabolic reaction rates, hypothalamus is a major role in controlling the body tem
Healing of Wounds
Inflammation causes tissue to become red and swollen. Dilated blood vessels bring in fluids, oxygen, nutrients, and
immune cells to aid in healing
Deep Wounds
A deep injury, extending into the dermis or
subcutaneous layer. Forms a blood clot, and scabs to cover wounds. May leave scar
Burns and Skin Cancer
Skin Cancer and Its Treatment
Caused by UV radiation and lack of protection.Wearing suncreen is a sure way to save yourself from skin cancer
Burns and there causes
Superficial Partial-Thickness burn
or also known as 1st degree burn is mostly cause by a sun burn or only injury from the epidermis
Partial Thickness burn
/ 2nd degree destroys some of the epidermis and some of the underlying dermis
Full Thinkness burn
/ 3rd degree destroys the epidermis, dermis, and accessory structures of the skin