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Mast cells, in the process of stimulating an inflammatory response, secrete all EXCEPT which of the following?
Cell divisions within the stratum __________ replace more superficial cells which eventually die and fall off.
The epidermis of the skin is composed of which type of tissue?
keratinized stratified squamous epithelium
While walking barefoot on the beach, Joe stepped on a thorn that penetrated through the sole of his foot to the dermis. How many layers of epidermis did the thorn penetrate?
The ________ in keratinocytes protects the epidermis and dermis from the harmful effects of sunlight.
The layer of the skin that contains the blood vessels and nerves that are closest to the surface of the skin is the ________ layer.
The layer of the skin that contains bundles of collagen and elastic fibers responsible for the strength of the skin is the ________ layer.
If a fair-skinned person is sunburned, why does his or her skin turn red?
The blood flow to the skin increases.
Skin can regenerate effectively even after considerable damage has occurred because
stem cells persist in both epithelial and connective-tissue components of the skin even after injury.
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