Exam 7: A: Skin and Its Appendages

Turnover time for epidermal tissue can be accelerated by injury.

There is a more than fivefold increase in the rate of sebum secretion between 10 and 19 years of age.

Third-degree burns are less severe than first-degree burns and therefore are not as painful.

Darkening of the skin may be caused by a decrease in the secretion of adrenocorticotropic hormone.

In using the rule of nines to determine the area of the body involved,the body is divided into 9 areas of 11% each.

Both the root and the lunula of the nail are covered by the cuticle and therefore cannot be seen externally.

During the life of an individual,epidermal tissue is constantly being replaced.

Integumentary system and skin are interchangeable terms.

Sensory receptors are found in the epidermis.

Continual abrasion to the skin surface tends to lengthen the turnover time of the skin.

The skin is the largest and thinnest organ.

Permanent tattoos are made by injecting pigments into the epidermis of the skin and because of the regeneration of the epidermis,they become less distinct with age.

The normal body temperature set point is 37° C.

Eccrine glands are the more numerous of the sweat glands.

Malignant hyperthermia,heat exhaustion,and heat stroke are increasingly dangerous consequences of exposure to high environmental temperatures.

An increase in sebum secretion in children may lead to increased susceptibility to ringworm.

The basic ingredient in the skin that determines skin color is melanin.

When heat must be conserved to maintain a constant body temperature,the dermal blood vessels increase their diameter.

Cells in the stratum spinosum layer are rich in RNA to make protein synthesis more efficient.

Keratohyalin is a protein in the stratum lucidum that will eventually be transformed into keratin in the cells of the epidermis.