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