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53 terms

Chapter 6 Skin

Anatomy 2 Test
STUDY
PLAY
The major part of its makeup is adipose
The reason the hypodermis acts as a shock absorber is that _____.
Arrector pilli
When one develops "goose bumps" on the skin, this is due to action of the _____.
Dermis
The _____ has two layers.
Langerhans
Specialized phagocytic cells are called _____ cells.
Keratinocytes
_____ are an important epidermal cell because they produce a fibrous protein that gives the skin much of its protective properties.
Melanocytes
Spidery-shaped cells in contact with cells in the stratum basale are called _____.
Male hormones
Male pattern baldness has a genetic switch that turns on in response to _____.
accumulate the melanin granules on their superficial portion, forming a UV-blocking pigment layer
Melanocytes and keratinocytes work together in protecting the skin from UV damage when keratinocytes _____.
Dermal papillae
The papillary layer of the dermis is connective tissue heavily invested with blood vessels. The superficial surface has structures called:
Fingernails are a modification of the epidermis
Which of the following statements best describes what fingernails actually are?
Subaceous glands
Acne is a disorder associated with _____.
Fibroblasts, macrophages, and mast cells
The dermis is a strong, flexible connective tissue layer. Which of the following cell types are likely to be found in the dermis?
Electrolytes
Sweet tastes salty because of its _____.
Stratum germinativum
The layer of the epidermis that contains melanocytes is the _____.
Stratum lucidum
An epidermal layer found only in the skin of the palms of the hands and the soles of the feet is the _____.
On the palms of the hands
The highest concentration of merocrine sweat glands would be found _____.
Epidermis
The layer of the skin that provides protection against bacteria as well as chemical and mechanical injuries is the _____.
Vitamin D
An important vitamin that is formed in the skin when it is exposed to sunlight is _____.
Decreases in concentration within cells during exposure to the sun
All of the following are true of the pigment melanin, except that it _____.
Is attached to the dermis by a basement membrane
All of the following are true of the subcutaneous layer, except:
produces the body odor characteristic of "sweating"
All of the following are true of perspiration Produced by merocrine sweat glands, except that it _____.
Sebaceous
Glands that discharge an oily secretion into hair follicles are _____ glands.
Melanin
An albino individual lacks the ability to produce lacks the ability to produce ____.
Lunula
The pale, crescent-shaped area at the base of a nail is called the _____.
Keratinocytes
The most abundant cells in the epidermis are _____.
Papillary
The layer of the skin that contains the blood vessels and nerves closest to the surface of the skin is the _____ layer.
Synthesis of vitamin C
Each of the following is a function of the integumentary system, except ______.
Cool the surface of the skin
The primary function of sensible persperation is to _____.
Insensible
Water loss due to interstitial fluid penetration through the surface of the skin is termed _____ perspiration.
Merocrine sweat
Sensible perspiration is produced by _____ glands.
Apocrine sweat
Most body odor is the result of bacterial metabolism of the secretions produced by _____ glands.
Can result in damage to the DNA of cells in the stratum germinativum
Exposure of the skin to ultraviolet light _____.
Catastrophic fluid loss
What is the first threat to life from a massive third-degree burn?
Eyebrow follicles are only active for a few months
Eyebrow hairs are always shorter than hairs on your head because _____.
Corneum, granulosum, spinosum, basale
A needle would pierce the epidermal layers of the forearm in which order?
Four different cell shapes found in five distinct layers, each cell shape with a special function
The epidermis is responsible for protecting the body against invasion of bacteria and other foreign agents primarily because it is composed of _____.
Kinky hair has flat, ribbonlike hair shafts
Which statement correctly explains why hair appears the way it does?
Allow the hair to assist in touch sensation
The function of the root hair plexus is to _____.
Vernix caseosa
_____ is a whitish material produced by fetal sebaceous glands.
The appearance of visible, silvery-white scars is an indication of streching of the dermis
Despite its apparent durability, the dermis is subject to tearing. How might a person know that the dermis has been stretched and/or torn?
Lamellated granules of the cells of the stratum granulosum, a glycolipid that is secreted into extracellular spaces
Water loss through the epidermis could cause a serious threat to health and well-being. Which of the following protects us against excessive water loss through the skin?
Reticular layer
The dermis has two major layers; whih of the following constitutes 80% of the dermis and is responsible for the tension lines in the skin?
Porphyria
______ is an inherited condition that affects the heme pathway; it leaves the skin scarred and gums degenerated, and may have led to the folklore about vampires.
The skin takes on a bronze or metallic appearance
Changes in the color of skin are often an indication of a homeostatic imbalance. Which of the following changes would sugges that a patient is suffering from Addison's disease?
Lucidum
If a splinter penetrated the skin into the second epidermal layer of the sole of the foot, which cells would be damaged?
Penetrate to the level of the capillaries
In order for bacteria on the skin to cause an infection in the skin, they must accomplish all of the following, except _____.
Scalp hairs grow constantly throughout life
Each of the following statements concerning hair is true, except one. Identify the exception.
thinning of the epidermis and decline of the protein elastin
Wrinkles and sagging skin in elderly individuals are the result of _____.
Sebaceous
Furuncles or boils are abscesses of _____ glands.
Blood flow to the skin increases
Which of the following happens if body temperature rises above normal?
Scab, Granulation, Contraction, Divide
The following are stages in the regeneration of skin following an injury.
Scar tissue
_____ is the result of an abnormally large number of collagen fibers and relatively few blood vessels at the repair site.
resident macrophage-like cells whose function is to ingest antigenic invaders and present them to the immune system
Although the integument is a covering, it is by no means simple, and some of its functions include _____.