17 terms

(Quiz 3) CH 3(2) - The Integumentary System

Name And Describe The Four Components Of Nails
Free Edge - White color beyond end of finger or toe

Body - Pink colored main part of nail

Lunula - White half-moon shaped area at proximal end

Root - Portion embedded in skin where mitosis takes place
Why Are Patients Not Allowed To Wear Nail Polish During Surgery
So blood oxygen levels can be monitored
What Is The Difference Between A Blackhead And Acne
A blackhead is an accumulation of oil
Acne is caused when microorganisms invade the oil
What Causes Stretch Marks (Striae Gravidarum)
Collagen tears in the skin due to obesity or pregnancy
Describe Psoriasis
Skin cells come to the surface daily causing dead skin cells to build up on the surface. Psoriasis looks scaly and flaky
Describe Lupus And Its Symptoms
Patient usually has characteristic "Butterfly Rash" across bridge of nose

Symptoms include arthritic-like pain, rash, fatigue, light sensitivity
Describe Vitiligo
Pigment disorder that causes white patches to appear on the skin due to inability for that patch to produce melanin
Differentiate Between Albinism And Vitiligo
In albinism, the ability to produce ANY melanin is missing. Whereas in vitiligo melanin is not produced in only certain areas (patches) of the skin
Describe Moles
Melanocytes growing together in clusters
Describe Birthmarks
Abnormal buildup of blood vessels at the skin surface
What Is The Difference Between A Corn And A Callus
Corn: thickening of toe skin in a circular shape

Callus: thickening of the skin on the palms and soles that is orange colored and spread out over a large area
Describe Warts
Uncontrolled growth of epithelial cells

Caused by a virus (stays with person forever)
Describe Impetigo
Looks like a blister at first, then forms encrusted lesions

Caused by bacteria. Treatment is antibiotics
Describe Ringworm
Red, scaly oval patches (spirals) (Athlete's Foot)

Caused by fungus. Treatment is topical antifungal
Describe Cause And Prevention Of Decubitus Ulcers (Bedsores)
Caused by continuous pressure to a specific area. Blood does not get to the tissue so it dies and becomes infected with bacteria that can eat the tissue down to the bone.

Prevention is rotating the body
Describe Damage and Visual Description Of The Three Major Types Of Burns
First Degree:
- Part of the epidermis is burned
- Redness, mild pain, swelling

Second Degree:
- Entire epidermis and part of the dermis is damaged
- Blisters, extreme pain

Third Degree:
- All layers of the skin are destroyed
- Scarring, no pain, charred
In The Three Major Types Of Skin Cancer Name:
The Layer Of Cells Affected
What It Looks Like
Life Expectancy
Basal Cell Carcinoma
- Stratum Basale
- Pale shiny bump on skin
- Good

Squamous Cell Carcinoma
- Stratum Spinosum
- Scaly, then ulcer-like
- Good

Malignant Melanoma
- Melanocytes
- Dark color
- Poor