A rare benign tumor that usually grows under these structures develops from a thermoregulatory structure called the glomus (10[1])body. These structures can be deformed to a concave, spoonlike (10[1])shape in patients with iron-deficiency anemia. A classic vascular manifestation (10[1])of endocarditis is the appearance of splinter hemorrhages in these (10[1])structures. The eponychium (“ep-uh-NICK-ee-um”) is a layer of stratum corneum at the base of these structures, which consist of a soft “bed” that (-5[1])lies (10[1])under a hard “plate.” (10[2]-5[1])The (10[1])lunula (10[1])is a white, (10[1])crescent-shaped (10[3])visible (10[1])extension (10[1])of (10[1])the (10[1])germinal matrix from which these structures (10[1])grow (10[1])continuously. Onychomycosis (“ON-uh-ko-my-CO-sis”) and onychocryptosis (“ON-uh-ko-crip-TOE-sis”) are conditions in which these structures become discolored by fungal infection (10[1])or become ingrown, respectively. (10[2])For 10 points, name these structures made of keratin that protect the tips of the digits. ■END■ (10[2])