MSI - INTEGUMENTARY SYSTEM

1. Epidermis

2. Dermis

3. Hypodermis

1. Epidermis

2. Dermis

3. Hypodermis

Layers of the skin

Tinea Barbae

Ringworm on bearded area

Tinea Unguium

Ringworm on nails

Onychomycosis

Other name for Tinea Unguium

Tinea Pedis

Ringworm on foot

Athlete’s foot

Other name for Tinea Pedis

Tinea Cruris

Ringworm on inguinal area

Tinea Cruris

a.k.a Jock itch

Tinea Capitis

Ringworm on head/scalp

Ring Worm

Fungal infection usual found in moist areas

Antifungal medication

Tx for ringworms

Warts

It is usually caused by Human Papilloma Virus (HPV)

Cervical cancer

Warts are common among ______

Shingles

Other term for herpes 3 (zoster)

Fungal infections

Are caused by group of fungi that invade the stratum corneum, hair, & nails

Warts

Are common, benign viral infection of the skin and adjacent mucous membranes caused by human papillomaviruses (HPVs).

Zoster virus or Chicken pox

Herpes 3 is a reactivation of what virus

Herpes 3

There is pain & tingling sensation along dermatomal distribution

Post-herpetic neuralgia

More common complication of herpes 3

Herpes simplex 2

A vesicular eruption on genitals

Herpes simplex 1

A vesicular eruption on face & mouth

Abscess

Cavity containing pus surrounded with inflamed tissue

Drain pus

Tx for abscess

Staphylococci

Common cause of abscess

Abscess

Any infected lesions can lead to what if left untreated

cellulitis

What can dermatitis lead to if left untreated?

Staphylococci & streptococci

What bacteria causes cellulitis?

Cellulitis

It’s red, hot, & edematous

Antibiotics

Tx for cellulitis

Haemophilus influenzae type b

What bacteria usually causes cellulitis in children?

Eczema

Other term for dermatitis

Dermatitis

Is a superficial inflammation of the skin caused by irritant exposure, allergic sensitization or delayed hypersensitivity, or genetically determined idiopathic factors

Acute dermatitis

Stage of dermatitis that is characterized by extensive erosion with serous exudate or by intensely pruritic, erythematous papules & vesicles on a background of erythema

Subacute dermatitis

Stage of dermatitis that is characterized by erythematous, excoriated, scaling papules or plaques that are either grouped or scattered over the skin

Chronic dermatitis

Stage of dermatitis that is characterized by thickened skin & increased skin marking (linchenification) secondary to rubbing & scratching, excoriated papules, fibrotic papules, & post inflammatory hyperpigmentation & hypopigmentation

corticosteroid cream & oral antihistamine

Tx for dermatitis or eczema

Skin

largest organ of the body

1. protection

2. sensation

3. vit. d production

4. temperature regulation

5. excretion

Functions of the skin

Dermis

Dense collagenous connective tissue containing fibroblasts, adipocytes, and macrophages

Subcutaneous layer

Other term for hypodermis

Hypodermis

Layers of the skin that is not part of the integument

1. Papillary

2. Reticular

Layers of dermis

Epidermis

Outermost layer exposed to the environment

1. Stratum corneum

2. Stratum lucideum

3. Stratum granulosum

4. Stratum spinosum

5. Stratum basale

Layers of epidermis

Stratum corneum

Layer of epidermis that gives the skin its waterproof characteristics & protects the skin from infection

Stratum granulosum

Layer of epidermis that is responsible for water retention

Stratum basale

Layer of epidermis that enables the epidermis to regenerate

Stratum spinosum

Layer of epidermis that adds a layer of protection to the underlying stratum basale

Melanocytes

Cell that determine skin pigmentation

rete peg region

Interface between the epidermis & the dermis

hair, glands, nails

What are the skin appendages?

Skin, Connective tissue, Aponeurosis, Loose Areolar Connective tissue, Perisosteum

Layers of SCALP

1. Lanugo

2. Vellus

3. Terminal

Types of hair

1. Eccrine

2. Apocrine

Sweat glands of the body

Nail

It is a thin plate, layers of dead stratum corneum cells