• 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 receptors5. Synthesizes various chemicals (vitamin

D)6. Excretes waste

Sebaceous glands

Oil glands all over the skinProduce 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 sweatRegulate 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)

Y O U J U S T N E E D T O W R I T E T H E N A M E D O W N A N D S O M E T H I N G S H O RT A B O U T I T- Y O U A R E

N O T C O P Y I N G T H E W H O L E S L I D E ! ! !

CAUTIONS O M E O F T H E S E P I C T U R E S A R E G R O SS A N D

S O M E O F T H E M W I L L M A K E Y O U I T C H

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 hairsSymptoms:

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 : virusSymptoms: 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- severeTreatment: 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-severeTreatment: 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 severeTreatments: 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: parasitesSymptoms: 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);

Treatment: Over-the-counter medication, prescription medication, wash EVERYTHING!!!

Pediculosis