Integument
The skin begins the production of vitamin D in which of the following situations? When
Exposed to ultraviolet radiation.
Signalled to by the hormone PTH.
Calcium is present.
It adds a hydroxyl group to a cholesterol molecule.
Exposed to ultraviolet radiation.
Choice D happens in the liver and in the kidney. PTH signals the kidney to act on the modified precursor, whereupon a hydroxyl group is added.
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People with full-thickness burns to more than 20% of their body are in a life- threatening situation. This is due to which of the following?A. The body’s inability to thermoregulate
B. The loss of the ability to produce vitamin D
C. The buildup of urea and uric acid which would otherwise have been excreted by the skin
D. The body’s inability to prevent water loss
When a medicine is delivered via a patch attached to the skin, it is said to be delivered:
A. Transdermally
B. Subcutaneously
C. Topically
D. Intramuscularly
Which stratum of the epidermis protects the body against water loss and abrasion?
A. Stratum germinativum
B. Stratum basale
C. Stratum lucidum
D. Stratum corneum
What is another name for sweat glands?
A. Ceruminous glands
B. Sebaceous glands
C. Sudoriferous glands
D. Apocrine glands
Which glands secrete “oil” into a hair follicle?
A. Apocrine
B. Eccrine
C. Ceruminous
D. Sebaceous
Which cell type produces a pigment that affords the skin some protection against ultraviolet radiation?
A. Keratinocytes
B. Melanocytes
C. Dendrocytes
D. Merkel cells
Where must the ink in a skin tattoo be placed for the tattoo to be permanent?
A. In the hypodermis
B. In the dermis
C. In the epidermis
D. Under the stratum corneum
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