Questions and Answers
What affects the nail plate's growth?
Overall health
A typical adult's nail growth rate is more than 1/5 inch (5.2 mm) per month.
False
It typically takes nine months to a year for the complete replacement of a toenail.
True
The thumbnail is the fastest-growing nail.
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For healthy nail maintenance in later life, it is necessary to file the ridges that develop in the nail plate.
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Infection of the matrix can change the nail plate's shape.
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Although toenails grow slower than fingernails, they are thicker because the toenail matrix is longer than the fingernail matrix.
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The _______ is the whole skin flap that covers the matrix, from the visible nail plate's edge to the first joint of the finger or toe.
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What is the natural nail technically called?
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The natural nail unit is mainly made up of _________ which is the fiber-shaped protein found in skin and hair.
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Identify a characteristic of a healthy nail.
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The _____ is the section of living skin that supports the nail plate as it extends toward the free edge.
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The _______ is part of the natural nail that contains nerves, blood vessels, and lymph to nourish cells that differentiate and become keratinized to form the nail plate.
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Identify a difference between the cuticle and the eponychium.
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Identify a function of the hyponychium.
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A tough band of fibrous tissue that links bones or keeps an organ in place is called?
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Identify a function of the eponychium.
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Ordinarily, complete nail plate replacement for a fingernail takes about?
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What is the water content of a healthy nail?
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Study Notes
Nail Growth and Structure
- Overall health significantly affects the growth of the nail plate.
- A typical adult's nail growth rate is less than 1/5 inch (5.2 mm) per month.
- Complete replacement of a toenail typically requires nine months to one year.
- The thumbnail does not grow faster than other nails.
- It is not necessary to file the ridges that develop in the nail plate for healthy maintenance in later life.
- Infection of the nail matrix can alter the shape of the nail plate.
- Toenails grow slower than fingernails but are thicker due to a longer toenail matrix.
Nail Anatomy
- The proximal nail fold is the skin flap covering the matrix, extending from the visible nail plate's edge to the first joint.
- The natural nail is scientifically known as onyx.
- The natural nail unit primarily consists of keratin, a fiber-shaped protein found in skin and hair.
Characteristics and Functions
- Healthy nails are characterized by being firm and flexible.
- The bed epithelium is the living skin section that supports the nail plate towards the free edge.
- The nail matrix contains nerves, blood vessels, and lymph, nourishing cells that create the keratinized nail plate.
- The cuticle is dead, colorless tissue, while the eponychium is living skin at the base of the nail plate.
- The hyponychium serves as a protective barrier against microorganisms.
- Ligaments are tough bands of fibrous tissue that connect bones or support organs.
- The eponychium is crucial as living skin at the nail plate's base.
Replacement and Health
- Complete replacement of a fingernail takes approximately 4 to 6 months.
- A healthy nail typically contains 15 to 25 percent water.
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Description
Test your knowledge on nail growth and structure with this quiz. Explore topics such as nail plate growth factors, nail growth rates, and the time it takes for nail replacement. Learn interesting facts while assessing your understanding of nails.
