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