Unit 5 Integumentary System

What is the composition of the papillary layer of the dermis?

Areolar connective tissue

The loose connective tissue that separates the integument from deeper tissues and organs is the called the

hypodermis or subcutaneous layer

A thickened area of scar tissue that is covered by a shiny, smooth epidermal surface is called a

keloid

The protein that contributes to many of the skin's protective qualities is called

keratin

The skin may turn orange as a result of what buildup

keratin

The pale crescent area of the nail is called the

lunula

Modified and specialized sweat glands that produce milk are called

mammary glands

In albinism what is lacking

melanin

The observed differences in skin color reflect the levels of what production

melanin

The most severe type of skin cancer is most likey to develop from

melanocytes

What covers the nail bed?

nail body

thick skin can be found on the

palms

What is a pigment found in veggies that can make skin appear orange or yellow

carotene

The skin is also called the

cutaneuous membrane

The fold of the stratum corneum over the base of a nail is called the

cuticle

Shafts of hair are compromised of

dead keratinized epidermal cells

The dermis is composed largely of

dense irregular connective

Projections of the loose connective tissue from the dermis, which extend upward between the adjacent ridges of the epidermis are called the

dermal papillae

The highly vascular layer of the skin, which provides thermoregulation via changed blood flow is the

dermis

epidermal cells are supplied with nutrients from blood vessels in the

dermis

As cells are pushed form the deeper portion of the epidermis toward the surface they

die

When the body overheats, the skin responds by

dilating blood vessels

A small amount of UV radiation is beneficial because it stimulates vitamin D3 synthesis in the

epidermis

Thin skin is defined by the thickness of the

epidermis

Which of the following is the correct order of the layers of the cutaneous membrane?

epidermis, dermis, and hypodermis

When the arrector pilli muscles contract

goose bumps are formed

Hair is formed by the repeated divisions of epithelial stem cells in which structure?

hair matrix

The glands that begin discharging a sticky, cloudy, and potentially odorous secretion at puberty are called what?

Apocrine glands

Which of the following conditions is the most common form of skin cancer?

Basal cell carcinoma

Correct order of the cells layers, strata, in the thick skin, from basement membrane to free surface

Basale, spinosum, granulosum, lucidum, corneum

Through which mechanism does perspiration function in cooling the body?

Evaporation

During skin repair, most the scab consists of an insoluble network of what? It is a protein that forms from blood proteins during the clotting response?

Fibrin

Which type of burn appears inflamed and feels tender but has no blisters?

First degree

During the regeneration process of the skin after injury, what is the combination of blood clot, fibroblasts, and an extensive capillary network called?

Graulosum

Perspiration that is produced by apocrine sweat glands

Is limited to the hair follicles of the axilla, nipples, and groin

What is the function of melanin?

It protects DNA from the damaging effects of UV radiation

The reticular layer's collagen fibers directly provide which function?

Prevent damage to the tissue

Which of the following is the function of hair associated with a nerve fiber?

Provides an early-warning system that may help prevent injury

Why are injections administered in the hypodermis when administering drugs using a hypodermis needle?

There are no vital organs in the region

Melanin serves to protect cells in the deeper layers of the epidermis from

UV radiation

the condition that results from clogged sebaceous glands is

acne

In other mammals which glands function as scent glands, providing an important form of communication

apocrine

The subcutaneous layer consists of

areolar and adipose tissues

Exposure of the skin to UV light

can slowly increase melanoacyte activity

functions of the skin include

regulating body temp

What is the layer of the skin that contains bundles of collagen fivers and elastin, and it is responsible for the mechanical strength and flexibility of the skin

reticular

The deepest layer of cells in the epidermis is the cells of the

stratum basale

The epidermal layer whose cells have stopped dividing and started to produce large amounts of keratin the

stratum basale

The layer of the epidermis at the exposed surface is the

stratum corneum

When a person becomes "pale", what is the physiologic basis?

the blood supply to the skin decreases

The type of burn that injures the hypodermis, deeper tissues, and organs is a

third degree burn