Multiple Choice
Which part of a tooth often becomes thinner over time due to brushing, teeth grinding, and consumption of acidic foods?
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5. Integumentary System
Introduction to the Integumentary System
Multiple Choice
Attached at the base of the nail, under the skin and inside the mantle, is the:
A
lunula
B
hyponychium
C
nail matrix
D
nail plate
Verified step by step guidance1
Step 1: Understand the anatomy of the nail. The nail is composed of several parts, including the nail plate, nail matrix, lunula, hyponychium, and mantle. Each part has a specific function and location.
Step 2: Define the nail matrix. The nail matrix is the tissue located beneath the base of the nail, under the skin and inside the mantle. It is responsible for producing new nail cells, which push the older cells forward to form the nail plate.
Step 3: Differentiate the nail matrix from other parts of the nail. The lunula is the visible, crescent-shaped area at the base of the nail plate, while the hyponychium is the skin beneath the free edge of the nail. Neither of these structures is located under the skin and inside the mantle.
Step 4: Recognize the correct answer based on the description provided. The nail matrix fits the description of being attached at the base of the nail, under the skin, and inside the mantle.
Step 5: Apply this knowledge to similar questions by identifying the location and function of nail structures to determine the correct answer.
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