Question

question 55 (1 point)
the area of the nail where the nail plate cells are formed is the ____.
○ a free edge
○ b extension
○ c lunula
○ d matrix

question 56 (1 point)
dead cells that form over a wound or blemish while it is healing comprise a ____.
○ a macule
○ b tubercle
○ c crust
○ d vesicle

question 57 (1 point)
current research confirms that dandruff is the result of a fungus called ____.
○ a capitis
○ b pyrithione
○ c steatoides
○ d malassezia

Explanation:

Question 55

To solve this, we recall nail anatomy: the matrix is the area where nail plate cells are formed. The free edge is the part of the nail that extends beyond the fingertip, extension is not a standard nail anatomy term for cell formation, and the lunula is the visible part of the matrix (the white crescent), not the formation site. So the correct answer is d.

We analyze each option: a macule is a flat, colored spot (not dead cells over a wound), a tubercle is a small, rounded, solid elevation (not dead cells), a crust is formed from dried serum, blood, or pus (dead cells over a healing wound/blemish), and a vesicle is a small, fluid - filled blister (not dead cells). So the correct answer is c.

We recall dandruff - causing fungi: Malassezia is the fungus associated with dandruff. Capitis is part of a term for a scalp condition (e.g., tinea capitis), pyrithione is an ingredient in anti - dandruff products (not a fungus), and steatoides is not a fungus related to dandruff. So the correct answer is d.

Answer:

d. matrix

Question 56