Shanna Visarraga and Lacey Branch

Protect Prevent water loss Temperature regulation Metabolic regulation Immune defense Sensory receptor Excretion by means of secretion

Skin color

Hemoglobin, melanin, carotene

Thick skin

Palms of hands, soles of feet

Thin skin

Most of the body

Fingerprints

Papillary layer

Dermal papillae

Epidermal ridges

Reticular layer

“Network”

Stretch marks, wrinkles, and lines of cleavage

Not considered part of the integumentary

Composed of areolarconnective tissue and adipose connective tissue

Nails

Onychomycosis Fungal infection

Treatment: oral fungal medication

Yellow Nail Syndrome Nail growth thickens and

stops

Often a sign of respiratory disease

Spoon nail Nails are concave instead of

convex

Often a sign of iron deficiency

Beau’s lines Run horizontally across nail Can be sign of chronic

malnutrition

Hair

Lanugo

Vellus

Terminal hair

Protection Heat retention Facial

expression Sensory

reception Visual

identification Chemical signal

dispursal

Sweat glands

Merocrine▪ Thermoregulation, secretion, and

protection

Apocrine▪ Secretes into hair follicles

Sebaceous

Sebum

▪ Oily, waxy secretion

First Degree

Redness, pain, slight edema

Second Degree

Red, blistered, painful

Third Degree

Skin loss and grafting

Basal cell carcinoma

Most common

Least dangerous

Usually on face

Appearance is small, shiny, and enlarges with pearly edge

Treatment: surgical removal

Squamous cell carcinoma

Appears on scalp, ears, lower lip, or back of hand

Red, scaly, and elevated edges

Surgical removal

Note: May metastasize to other parts of body

Malignant melanoma Most deadly

Unusual changes in mole

Surgical removal

A. Asymmetry

B. Border

C. Color

D. Diameter

Comedo Open comedo is called a

“black head”

Closed is called a “white head”

Papule Dome-shaped

Mixture of white blood cells, dead cell, and bacteria

Nodule Similar to papule

Extends into deeper layers of skin

Will cause scarring

Cyst Fluid filled Can become severely

inflamed and painful Will cause scarring