Extra A&P 1 Exam 2

most house dust allergies are actually an immune response to which of the following?

dust mite feces

which of the following is/are responsible for minimizing water loss across the epidermis?

Lipids from lamellar bodies

which of the following would be the hair type resulting from the presence of trichossiderin and flattened hair shafts?

Black, straight hair

which term is synonymous with the cuticle of the nail?

eponychium

which vitamin begin its synthesis in the skin when the skin is exposed to ultraviolet light?

vitamin D

one type of experimental contraceptive device is a skin patch that contains a chemical absorbed through the skin. which of the following substances might be the type of chemical involved?

lipid soluble substances

A represents the outer layer of the skin, what part of the skin is it?

epidermis

which of the following are responsible for helping attach/anchor the epidermis?

all of these (desmosomes, dermal papillac, hemidesmosomes)

the integumentary system has many functions, one of which is

detection of heat and touch

the layer of the epidermis in which there is the greatest amount of mitotic activity is the

stratum basale

eccrine sweat glands

aid in cooling the body

contrary to the pigments of a tattoo, sharpie marker on a baby's skin is limited to...

epidermis

a toenail that chronically becomes ingrown may be removed by a physician. what portion must be removed to ensure it will not grow back?

nail matrix

a victim of an automobile accident goes into shock, which returns is decreased blood flow. the victims skin will

become pale

stretch marks may develop on the abdomen of pregnant women because of stretching and rupture of the

dermis

what type of skin gland secretes sweat?

sudoriferous gland

Mr. Deed's "wicked-bad frost bite" could cause the black coloration of his foot because of...

gangrene

A slight sunburn is an example of a ______ burn.

first degree

which type of burn appears white or black with no immediate pain

third- degree

which of the following represents the correct order of the layers of the epidermis from the deepest to the most superficial?

stratum basale, stratum spinousum, stratum granulosum, stratum lucidium, and stratum cornemum

which of the following statements concerning vitamin D is false?

Vitamin D causes the kidney to excrete calcium.

Which items/substances in Ace Ventura's rhino disguise had the most heat (not necessarily temperature)?

aces body

the top of dr cossel's head is "truly" bald in the sense that there is absolutely no hair growing there

false

Blood vessels in the __________ provide a hair with its sole source of nutrition.

bulb

the dermal layer closest to the epidermis is the

papillary layer

what was the primary type of heat transfer that caused ace Ventura's rhino to disguise to heat up?

conduction

in which layer of the epidermis are granules of keratohyalin formed and visible microscopically?

stratum granulosum

the contraction of arrector pili

pulls the follicle into a more perpendicular position in relation to the skin surface

which of the following statements concerning the subcutaneous layer is false?

the subcutaneous layer can also be referred to as the hypodermis

what happens to cell when they move from the epidermis to the surface of the skin?

they die

which of the following will help cool the body?

evaporation of sweat from the skins surface

Eskimos/Inuits wear a great deal of clothing and have limited exposure to U.V light, but do not suffer from vitamin D deficiency. A possible explanation is...

They get enough vitamin D in their diet of fish and marine mammals.

A yellow pigment derived from plants that can impair a yellow color to the skin is...

Carotene

This figure is described as a...

Photomicrograph

Which term is synonymous with the cuticle of the nail?

Eponychium

What protein is the most abundant type found in nails, hair, and epidermis?

keratin

The activity of apocrine sweat glands, and subsequent bacterial metabolism...

Leads to body odor

Which durable protein is found in the nails, hair, and epidermis?

Keratin

Which of the following prevents the skin from overstretching and gives it strength (the "anchor rope" fibers?

Collagen fibers

Which type of skin gland secretes sweat?

Sudoriferous Gland

Which type of skin cancer is most deadly?

Melanoma

Vitamin C is essential for normal collagen synthesis. If a child suffered from a vitamin C deficiency, which layer of the skin would be most affected?

Reticular layer of dermis

Blood vessels in the....... provide a hair with its sole source of nutrition.

Dermal Papilla

The structure labeled "D" illustrates what type of gland?

Sebaceous Gland

What percentage of a persons skin would be involved if they had burned from the waist up?

63%

True or False:
The top of Dr. Cossel's head is "truly" bald in the sense that there is absolutely no hair growing there.

False

The dermal layer closest to the epidermis is the...

papillary layer

Contraction of the arrector pili...

pulls the follicle into a more perpendicular position in relation to the skin surface

If the structure indicated by "B" represents a clump of pigment cells with abnormal structure and uncontrolled growth, it is most likely which type of cancer?

Melanoma

Striae indicate a predominance (more than random) of collagen fibers...

Running parallel to tension lines

In which layer of the epidermis are granules of keratohyalin formed and visible microscopically?

Stratum Granulosum

What happens to cells when they move from the epidermis to the surface of the skin?

They die

A slight sunburn is an example of a......burn.

First-degree

The layer of the epidermis in which there is greatest amount of mitotic activity is the.....

stratum basale

What region of the "skin" is indicated by the region labeled "C"

Reticular Dermis

Which of the following functions is NOT associated with the skin?

Vitamin C production

Baldness...

Is more common in men than in women

The integumentary system has many functions, one of which is...

detection of heat and touch

The main fibrous layer of the dermis is the....

reticular layer

A cutaneous injection (like a TB test) delivers medication/solution into the...

dermis

Which of the following statements concerning vitamin D is false?

Vitamin D causes the kidney to excrete calcium.

Which of the following represents the correct order of the layers of the epidermis from the deepest to the most superficial?

Stratum Basale
Stratum Spinosum
Stratum Granulosum
Stratum Lucidum
Stratum Corneum

Which of the following skin changes is usually associated with aging?

Loss of subcutaneous tissue contributes to sagging of the skin.

Nail cells are produced by the...

Nail matrix

Damage to which portion of a hair follicle will most affect hair growth?

Hair bulb

A victim of an automobile accident goes into shock, which results in decreased blood flow. The victim's skin will...

become pale

Which vitamin begins its synthesis in the skin when exposed to ultraviolet light?

Vitamin D

Stretch marks may develop on the abdomen of pregnant women because of stretching and rupture of the...

dermis

Eccrine Sweat Glands

aid in cooling the body

Which of the following will help cool the body?

evaporation of sweat from the skin's surface

An increase in body temperature causes

sweating

A toenail that chronically becomes ingrown may be removed by a physician. What portion must be removed to ensure it will not grow back?

Nail matrix

The epidermis

contains no blood vessels

When a person undergoes laser hair removal... which component of the hair follicle is destroyed to ensure the hair does not grow back?

Papilla & Matrix

Which of the following statements concerning the subcutaneous layer is FALSE?

The subcutaneous layer is composed of dense connective tissue with collagen and elastin fibers

Which type of burn appears white or black with no immediate pain?

Third-degree

Contrary to the pigments of a tattoo, Sharpie and marker on a baby's skin is limited to...

epidermis

Which of the following statements concerning sebaceous glands is FALSE?

Sebaceous glands are an example of apocrine glands

One type of experimental contraceptive device is a skin patch that contains a chemical absorbed through the skin. Which of the following substances might be the type of chemical involved?

Lipid soluble substances

Which of the following would be the hair type resulting from the presence of trichossiderin and flattened hair shafts?

Red, curly hair

As skin cells move toward the surface of the body, they produce a protein that reduces water loss. This process is called

Keratinization

Delicate unpigmented hairs that cover the fetus in early development are called

Lanugo