Chapter 6: The Integumentary System

Identify the apocrine gland on this image.

Fifth line on right hand side

Just thinking about this accessory organ of the skin gives me goose bumps.

arrector pili

Which of these disorders originates in the epidermis? Select all that apply.

basal cell carcinoma melanoma psoriasis

A superficial partial thickness burn

may involve the upper portion of the dermis

Where would you find the thickest and hardest stratum corneum on your body?

on your fingernails and toenails

The keratin-filled uppermost layer of the epidermis is called the

stratum corneum

Which of these structures is the most superficial?

stratum corneum

Sunburn associated with blisters is an example of a _________ burn.

superficial partial thickness

These days, it can be hard to know just how much time one should spend in the sun. Too much exposure to sunlight can lead to sunburn or wrinkles (not to mention melanoma), but too little can cause a deficiency in ___________, because a body needs sunlight to help the skin synthesize this substance.

vitamin D

If you have ever watched the TV crime show "CSI," you have seen the good guys catch the bad guys using

dermal papillae

Elastic connective tissue and nerves are especially abundant in the ____.

dermis

Hair follicles originate in the ____ of the skin.

dermis

Where are the structures located that actively modify body temperature?

dermis

Which of these disorders results from infection with the herpes simplex virus? Select all that apply.

genital herpes cold sores

On your first day working in the burn unit at County Hospital, you meet burn patient Sarah, who was temporarily trapped in her basement after a bundle of cleaning rags caught fire. Sarah got out, but her shirt and pants caught fire as she raced through the house. Luckily, Sarah remembered to "stop, drop, and roll" when she got outside, so she received only superficial burns, but all over both her arms, both legs, her groin, and her torso. What percentage of Sarah's body surface area is burned?

91%

True or false: The major connective tissue protein in the dermis is keratin.

False

Basal cell carcinoma is the most serious type of skin cancer.

False

Eccrine sweat glands are attached to and empty into hair follicles.

False

The capillaries in the epidermis nourish the underlying dermis layer.

False

The skin plays a role in gas exchange of oxygen and carbon dioxide.

False

The stratum corneum lies between the epidermis and the subcutaneous layer.

False

True or false: Nails are made of collagen.

False

True or false: Of the three types of skin glands, only sebaceous glands are associated with hair follicles.

False

True or false: The lunula is the proximal portion of the nail bed.

False

Which is true about the accessory structures of the skin?

They include the sweat glands, oil glands, and hair, and are located in the dermis.

Identify the accessory structure that is involved in temperature regulation of the body.

Third line left hand side

True or false: The nail root is superficial to the nail matrix.

True

True or false: apocrine glands are connected to hair follicles.

True

The layer of tissue immediately inferior to the dermis is

adipose tissue

Which of these are disorders of melanocytes? Select all that apply.

albinism melanoma

A coiled, tube-like structure that secretes directly into the hair follicle is ____________.

an apocrine sweat gland

Our ___________ glands are actually scent glands.

apocrine

_________ glands are located deep in the dermis and sweat into the hair follicle.

apocrine

The skin's role in body temperature homeostasis involves action by ___________ and ___________.

blood vessels sweat glands

Which of the following is NOT a function of skin?

breathing

The maintenance of constant body temperature would be difficult without the actions of the

eccrine glands

Which skin layer does not contain blood vessels?

epidermis

Adipose tissue is most abundant in what layer of the skin?

hypodermis

You can tell a lot about a person just by looking at their skin. The person whose skin is yellow likely has ___________, perhaps because of liver disease.

jaundice

The "liver spots" that are often seen on the elderly aren't from the liver at all. Actually, they are the result of __________.

localized increased melanin production

Which of the following is the white semilunar area of the nail near the root?

lunula

The epidermis contains

melanocytes

Which of these nail structures is the deepest?

nail matrix

The dilation of blood vessels close to the skin

results in heat loss

Which of these cells/glands can be classified as exocrine? Select all that apply.

sebaceous glands meibomian glands eccrine sweat glands

Which of these disorders originates from an infection of nervous tissue?

shingles

Which of these disorders can be treated with antiviral agents? Select all that apply.

shingles cold sores

New cells grow from the deepest layer of the epidermis, the

stratum basale

You are viewing a cross-section of thick skin under the microscope, and you focus on a region containing many nuclei. Which skin region are you viewing?

stratum basale

Arteries, veins, and nerves are found in the ___________ layer of the skin.

subcutaneous

The ______ connects skin to surface muscles.

subcutaneous layer

You are viewing a cross-section of thick skin under the microscope, and you focus on a region containing numerous adipose cells. Which skin region are you viewing?

subcutaneous layer