Question 1 Multiple Choice 1 points
The composition of the secretions of the eccrine glands is:
primarily uric acid.
99% water, sodium chloride, and trace amounts of wastes, lactic acid, and vitamin C.
fatty substances, proteins, antibodies, and trace amounts of minerals and vitamins.
Question 2 Multiple Choice 1 points
Although the integument is a covering, it is by no means simple, and some of its functions include:
the dermis providing the major mechanical barrier to chemicals, water, and other external substances.
resident macrophage-like cells whose function is to ingest antigenic invaders and present them to the immune system.
cooling the body by increasing the action of sebaceous glands during high-temperature conditions.
epidermal blood vessels serving as a blood reservoir.
Question 3 Multiple Choice 1 points
Which muscles attached to the hair follicles cause goose bumps?
Question 4 Multiple Choice 1 points
The most important factors influencing hair growth are:
sex and hormones.
age and glandular products.
the size and number of hair follicles.
nutrition and hormones.
Question 5 Multiple Choice 1 points
In addition to protection (physical and chemical barrier), the skin serves other functions. Which of the following is another vital function of the skin?
It converts modified epidermal cholesterol to a vitamin D precursor necessary in calcium metabolism.
It aids in the transport of materials throughout the body.
The cells of the epidermis store glucose as glycogen for energy.
It absorbs vitamin C so that the skin will not be subject to diseases.
Question 6 Multiple Choice 1 points
The design of a person's epidermal ridges is determined by the manner in which the papillae rest upon the dermal ridges to produce the specific pattern known as handprints, footprints, and fingerprints. Which of the following statements is true regarding these prints or ridges?
Every human being has the same pattern of ridges.
They are genetically determined, therefore unique to each person.
Because we are constantly shedding epithelial cells, these ridges are changing daily.
Identical twins do not have the same pattern of ridges.
Question 7 Multiple Choice 1 points
The dermis is a strong, flexible connective tissue layer. Which of the following cell types are likely to be found in the dermis?
goblet cells, parietal cells, and Kupffer cells
monocytes, reticulocytes, and osteocytes
fibroblasts, macrophages, and mast cells
osteoblasts, osteoclasts, and epithelial cells
Question 8 Multiple Choice 1 points
The integumentary system is protected by our immune system through the action of cells that arise from bone marrow and migrate to the epidermis. Which of the following cells serve this immune function?
cells found in the stratum spinosum
macrophages called Langerhans' cells
keratinocytes, because they are so versatile
Question 9 Multiple Choice 1 points
Apocrine glands, which begin to function at puberty under hormonal influence, seem not to be useful in thermoregulation. Where would we find these glands in the human body?
in all body regions and buried deep in the dermis
beneath the flexure lines in the body
in the axillary and anogenital area
in the palms of the hands and soles of the feet
Question 10 Multiple Choice 1 points
Which of the following statements indicates the way in which the body's natural defenses protect the skin from the effects of UV damage?
The skin is protected by the synthesis of three pigments that contribute to the skin's color.
Carotene, which accumulates in the stratum corneum and hypodermal adipose tissue, is synthesized in large amounts in the presence of sunlight.
The skin is protected by increasing the number of Langerhans' cells, which help to activate the immune system.
Prolonged exposure to the sun induces melanin dispersion, which in turn acts as a natural sunscreen
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