GET READY TO TAKE NOTES REMINDER: INTEGUMENTARY SYSTEM QUIZ THURS. / FRI. Wednesday, September 30, 2015

Skin & the Integumentary System

Functions of Skin 1. Maintaining homeostasis/protection (mechanical, chemical, thermal, UV, bacteria) 2. Regulate body temperature 3. Retards water loss (keratin) 4. Houses sensory receptors 5. Synthesizes various chemicals (vitamin D) 6. Excretes waste

Sebaceous glands Oil glands all over the skin Produce sebum which is a lubricant that keeps skin/hair soft and moist, also kills bacteria

Eccrine Glands Apocrine Glands Small and numerous all over the body Produce sweat Regulate body heat Large and confined mainly to axillary and genital areas Produce fatty acid & protein secretion that when bacteria use as food causes us to have body odor Sudoriferous glands (sweat glands)

YOU JUST NEED TO WRITE THE NAME DOWN AND SOMETHING SHORT ABOUT IT- YOU ARE NOT COPYING THE WHOLE SLIDE!!! CAUTION SOME OF THESE PICTURES ARE GROSS AND SOME OF THEM WILL MAKE YOU ITCH Common Skin Disorders (Infection & Allergies pg 123)

Athlete’s Foot Causes: mold-like fungi called dermatophytes that thrive in damp environments. It is contagious!!! Symptoms: Itching, stinging, burning, blisters, dryness, cracking & peeling skin Types: Ringworm, jock itch, nail fungus Treatments: Ointments, powders, sprays, creams, pills

Athlete’s Foot

Boil/ Carbuncle Causes: Bacteria or ingrown hairs Symptoms:  A painful, red bump that starts out about the size of a pea  Red, swollen skin around the bump  An increase in the size of the bump over a few days as it fills with pus (can sometimes reach the size of a golf ball)  Development of a yellow-white tip that eventually ruptures and allows the pus to drain out.  Fever  Chills Treatments:  Incision and drainage.  Antibiotics.

Boil/Carbuncle

Herpes/Cold sores Cause : virus Symptoms: cluster of small fluid-filled blisters that break, forming painful sores that crust and heal, itching, tingling, or burning sensation, painful urination Types: HSV-1 & HSV-2, either can be mild or severe Treatments: ointments, Antiviral drugs (valtrex)

Herpes

Contact dermatitis Causes: exposure to chemicals that provoke allergic responses. Symptoms: Itching, redness, swelling, progressing to blistering Treatments: Various creams, ointments, pills

Contact dermatitis

Impetigo Cause: bacterial skin infection, very contagious Symptoms: red sores that can break open, ooze fluid, and develop a yellow- brown crust Types: mild- severe Treatment: ointment, creams, antibiotics

Impetigo

Psoriasis Cause: Unknown, possibly genetic or bad immune system Symptoms: Bright red areas of raised patches (plaques) on the skin, often covered with loose, silvery scales. Plaques can occur anywhere, but commonly they occur on the knees, elbows, scalp, hands, feet, or lower back. Tiny areas of bleeding when skin scales are picked or scraped off,Mild scaling to thick, crusted plaques on the scalp. Itching, Nail disorders Types: 6 types ranging from mild-severe Treatment: creams, ointments, pills

Psoriasis

Just for Educational Fun!!!!

Acne Possible Causes: Bacteria, Stress, Hormones, Steroids Symptoms: Pimples, blackheads, pustules, whiteheads, cysts Types: mild-severe, cost common in teenagers Treatment: wide variety of soaps and antibiotics

Acne

Eczema Cause: is unknown, thought to be linked to an overactive response by the body's immune system to unknown triggers, usually in family history Symptoms: almost always itchy, areas usually appear very dry, thickened, or scaly. Commonly occurs on the face, knees, hands, or feet Types: mild to severe Treatments: lotions and creams

Eczema

Keratosis pilaris Cause: from the buildup of keratin — a hard protein that protects your skin from harmful substances and infection. Keratin forms a scaly plug that blocks the opening of the hair follicle. Usually many plugs form, causing patches of rough, bumpy skin. Symptoms: Small, acne-like bumps, Painless, skin- colored bumps that can, at times, be red and inflamed, Dry, rough patches Treatment: medicated creams & ointments

Keratosis pilaris

Pediculosis Cause: parasites Symptoms: a tickling feeling of something moving in the hair; itching (caused by the an allergic reaction to the bites); sores on the head (caused by scratching);itching Treatment: Over-the-counter medication, prescription medication, wash EVERYTHING!!!

Pediculosis