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Integumentary system by Jorge Velez (Functions (Gets rid of body waste,…
Integumentary system by Jorge Velez
Layers of skin
Dermis
Sebaceous gland
Oil gland
Blood vessels
Contain vains and arteries in the dermis
Pacinian corpuscles
Nerve ending for pressure found in reticularr layer
Meissner corpuscles
Nerve ending for light touch found in reticular layer
Dense CT
Makes up most of the dermis
Subcutaneous layer
Function is insulation layer that anchors the skin to the underlying connective tissue
Dermal papillary
Creates fingertips
Sudorriferous gland
Sweat gland
Hypodermis
Subcutaneous layer
Adipose tissue made fat
Layer that anchors the skin to the underlying connective tissue; made of adipose and areolar connective tissue
Blood vessels
Function of the layer is for insulation
Epidermis
Stratum lucidum
Under the stratum corneum
Stratum granulosm
Has granules of keratohyalin
Stratum basale
Deepest layer ; consists of stem cells capable of undergoing cell division
Stratum spinosum
Where the cell developed tiny spines that assist in binding all cells tightly together
Stratum corneum
Most superficial layer consisting of dead cells that shed
Functions
Gets rid of body waste
Maintains homeostasis
Produces vitamin D
Hemogoblin
Skin protects against outside harm
Maintain stable body temperature
Accessory organs
Nails
Lunula
Moon shaped white area
Nails cuticle
Where skin and nail attach the root
Free edge
Portion of hair not attached to the nail bed
Grow from area of rapid dividing cells
Nails body
Portion of hair attached to nail bed
Nails bed
Skin underneath the nail
Nails matrix
Where nail grows
Nails root
Portion of the nail embedded in the skin
Hair
Hair follicle
A tubular cavity containing the root
Apocrine gland
In the public and underarm area
Sebaceous gland
Sebum
Skin and hair moist
Eccrine gland
Produces sweat and decreases body temperature
Hair bulbs
Central core of hair
Medulla
Middle layer of hair
Cotex
Hair cuticle
Hair root
Portion of hair underneath the scalp
Hair shaft
Portion of hair above the scalp
Skin
Hypodermis
Dermis
Epidermis
Body membrane
Cutaneous membrane
Covers the body
Synovial membrane
Function to reduce friction in joints
Mucous membrane
Function is the absorption and secretion
Serous membrane
Visceral
Closer to the organ
Parietal
Closer to the body surface
Peritoneium
Covers the abdominal region
Pleura
Covers the lungs
Pericadium
Covers the heart
Skin condition
Skin cancer
Malignant melanoma
ABCD rule
Assymetrical
Color
Borders
Diameter
Most deadly from melanocytes spread rapidly to lymph and blood vessles
Benign
Abnormal cell growth or mass on skin
Malignant
Spread and can be life threatening
Basal
Least malignant a d most common comes from stratum basal
Burns and classsification
1st degree burn
No scaring will heal in couple of days to 2 weeks
2nd degree burn
Destroys epidermis and little damage to dermis
3rd degree burm
Destroys epidermis, dermis and accessory organs
Extensive scarring
Infection
Athletes foot
Fungi infected on feet
Oitmeant and cream are used as treatmebt
Boils and carbuncles
Cause by friction and shaving
Inflamation from hair follicles
Cold sores
Feber blister
Small blisters filled with fluid
No cure but can help with cold sore cream
Impetigo
Pink water filled lesions
Cream soap and antibiotics
Developed yellow crust and ruptures
Allergies
Itching redness swelling and blisters
Cause by allergic reaction such as chemicals
Cream is a treatment