120
Chapter 6(^) ®
Learning
Cengage ©
(A) Skin red, dry
First degree
(^) ®
Learning
Cengage ©
(B) Blistered, skin moist, pink or
red Second degree
(^) ®
Learning
Cengage ©
(C) Charring, skin black, brown,
red Third degree
Epidermis
Dermis
Subcutaneous
fat, muscle^
First degree, superficial
Second degree,
partial thickness
Third degree, full thickness
Inc.
Survivors, Burn for Society Phoenix The of courtesy Photos
Inc.
Survivors, Burn for Society Phoenix The of courtesy Photos
Inc.
Survivors, Burn for Society Phoenix The of courtesy Photos
Figure 6- 3 Burns are usually referred to as (A) first, (B) second, or (C) third
degree.
epidermis. The deeper cell layers at the base of the hair
follicle are responsible for the production of new cells by
mitosis. The epithelial cells of the hair follicle divide by
mitosis and get pushed upward because of the basement
membrane. As the cells move upward, they keratinize and
form the layers of the hair shaft. Hair growth begins in the
hair bulb. Blood vessels in the hair bulb provide
the nourishment to produce the hair. Hair grows in cy-cles.
The duration of the cycle depends on the hair. Scalp hair
grows for 3 years and rests for 1 or 2 years. Hair loss
normally means the hair is being replaced because the old
hair falls out of the follicle when a new hair begins to form.
Some people, particularly men, have a genetic
predisposition for what is called pattern baldness. These