Examlex
Which of the following statements is true of a situation where the body encounters the same invader twice?
Papillary Layer
The upper layer of the dermis that contains blood capillaries, sensory neurons, and the bases of the hair follicles.
Dermis
The dermis is the thick layer of living tissue below the epidermis that forms the true skin, containing blood capillaries, nerve endings, sweat glands, hair follicles, and other structures.
Tyrosinase
An enzyme critical in the production of melanin and other pigments from tyrosine by oxidation.
Ultraviolet Light
A form of electromagnetic radiation with a wavelength shorter than that of visible light but longer than X-rays, known to cause skin damage and beneficial for producing vitamin D.
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