Ch. 5 ECQ

The __________ consists of many layers of dead squamous cells surrounded by lipids.

Stratum corneum

The nail is _________ that contains hard keratin.

Stratum corneum

In which layer of epidermis do the nucleus and other organelles disintegrate, and the cells die?

Stratum granulosum

The stratum germinativum includes both the stratum basale and the

Stratum spinosum

Which of these qualities must a medication possess if it is absorbed from a skin patch?

lipid-soluble

The layer of skin that is composed of dense connective tissue and has projections called papillae is the

Dermis

According to "the rule of nines," a man burned extensively on his head and both upper limbs has burns on __________ percent of his body.

27

Cyanosis is a condition caused by

A decrease in blood oxygen

The outermost layer of the hair shaft is the

Cuticle

Thick skin

Does not produce hair

Which of these statements is true regarding keratinization?

Epithelial cells eventually die and produce an outer layer of cells.

After the resting stage of hair growth, each hair normally

Falls out

Nails

Grow from the nail matrix

Most of the cells of the epidermis are

Keratinocytes

This layer contains loose connective tissue and has about half of the body's stored fat.

Hypodermis

Which of these is the type of hair found on the fetus, but is not present after birth?

Lanugo

Hair is formed from epithelial cells in the

Matrix

Striae occur as a result of

Overstretching the dermis

Concerning skin color, which of these statements is correctly matched?

Pale skin = Shock

The epidermis is nourished by diffusion from capillaries in the

Papillary layer of the dermis

The specific layer that shapes the ridges for fingerprints and footprints is the

Papillary layer of the dermis

Which glands of the skin possess all of the following characteristics? 1. secrete oily, white substance rich in lipids 2. open into a hair follicle 3. during secretion, lysis and death of secretory cells occurs

Sebaceous glands

Cell division occurs in which layer of the epidermis?

Stratum basale

In which of these layers are melanocytes found?

Stratum basale

This is NOT considered to be a cause of acne?

a diet rich in fatty foods and chocolate

Which type of burn is described by all of the following characteristics? 1. epidermis and dermis destroyed 2. initially painless 3. much scar tissue formed

Third-degree burn

"Peach fuzz" found on the face of a 1-year old baby is

Vellus hair

Arrector pili muscles

contract in response to frightening situations.

This occurs as a result of a decrease in body temperature?

contraction of arrector pili muscles

All of these conditions increase the amount of melanin in the skin

exposure to ultraviolet light, pregancy, Addison's disease, freckles

The hair follicle

has an epithelial root sheath and a dermal root sheath, can provide epithelial cells for skin repair, contains only the stratum germinativum at the hair bulb, has an arrector pili muscle attached.

As a result of aging, the skin

has decreased blood flow.

"Pattern baldness"

involves the hormone testosterone.

Terminal hair

is found on eyebrows and eyelids.

Melanin

is packaged into vesicles called melanosomes.

Apocrine sweat glands

produce secretions that are metabolized by bacteria to produce odor

Which of these parts of the body have the most merocrine sweat glands?

soles of the feet

Scalp hairs can grow longer than eyelash hairs because

the growth stage for scalp hairs is longer than for eyelash hairs