Nail Anatamoy Flashcards

1
Q

Why should cosmetologists have a thorough understanding of nail structure and growth

A

Be able to differentiate between cuticle and eponychium before services

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2
Q

Why should cosmetologist be knowledgeable about nail structure and growth?

A

Understanding, growth, cycles and natural nail structure prepares for nail services

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3
Q

What does the natural nail include?

A

All parts of the finger from tip to first knuckle

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4
Q

The natural nail is technically called what?

A

The onyx

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5
Q

What is the fiber shaped protein that mainly makes up the natural nail?

A

Keratin

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6
Q

Identify a characteristic of a healthy nail

A

The nail is translucent and slightly pink showing through from the nail bed

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7
Q

The nail bed, nail fold, eponychium, paronychium, and hyponychium are collectively called what?

A

Perionychium

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8
Q

What 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.

A

Proximal nail fold (PNF)

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9
Q

What is the section of living skin that supports the nail plate as it extends toward the free edge?

A

Nail bed (sterile matrix)

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10
Q

Which of the following statements is true of the nail plate?

A

The hardened keratin plate that rests on top of the nail bed

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11
Q

What is part of the natural nail that contains nerves, blood vessels and lymph to nourish cells that differentiate and become Careyes to form the nail plate?

A

Matrix

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12
Q

What is the Lanula?

A

Whitish, half moon shape under the nail plate

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13
Q

What is the difference between the cuticle and the eponychium?

A

The cuticle is dead tissue stuck to the nail plate
The eponychium is living skin under the PNF found at the nail plate covering the matrix

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14
Q

What is the function of the hyponychium?

A

It helps form a protective barrier, preventing microorganisms from infecting or invading the nail

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15
Q

What is the tough band of fibrous tissue that links bones or keeps an organ in place called?

A

Ligament

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16
Q

What statement is true of growth of the nail plate?

A

Growth is affected by nutrition, exercise, and overall health

17
Q

Which nail grows fastest?

A

The nail of the middle finger

18
Q

What’s a true statement of nail growth rates?

A

They decrease with age

19
Q

Ordinarily, complete nail plate replacement for a fingernail takes about how long?

A

4 to 6 months

20
Q

The nail matrix causes the nail plate to develop a series of slender grooves because why?

A

As you age, the matrix produces fewer cells

21
Q

What is the water content of a healthy nail?

A

15 to 25%

22
Q

The average rate of nail plate growth in an adult is about how long?

A

1/10 to 1/8 of an inch a month

23
Q

Which of the following is not part of the perionychium?

A

Distal phalanx

24
Q

What does a longer matrix lead to?

A

A thicker nail plate

25
Q

What is not a natural nail shape?

A

Almond