1.
The nail plate is made of dead cells, therefore they do not need________________.
Correct Answer
B. Oxygen
Explanation
The nail plate is made up of dead cells that do not require oxygen for their metabolic processes. Oxygen is needed by living cells to carry out cellular respiration, but since the nail plate is composed of non-living cells, it does not need oxygen to survive.
2.
Cuticle moisturizers are designed to treat the eponychium, hyponychium, and the sidewalls but not the _____________________.
Correct Answer
A. Cuticle
Explanation
Cuticle moisturizers are specifically formulated to target and treat the eponychium, hyponychium, and the sidewalls of the nails. These areas are prone to dryness, cracking, and irritation. However, the cuticle itself does not require additional moisturizing as it is already a protective layer that seals the nail plate and nail bed. Therefore, cuticle moisturizers are not intended to be applied directly on the cuticle.
3.
Tissue that attaches the nail plate t the nail bed
Correct Answer
C. Bed epithelium
Explanation
The tissue that attaches the nail plate to the nail bed is called the bed epithelium. This tissue is responsible for anchoring the nail plate to the underlying nail bed and providing support and stability to the nail. It helps to maintain the structure and integrity of the nail, preventing it from detaching or becoming loose. The bed epithelium also plays a role in the growth and regeneration of the nail plate.
4.
Living skin at the base of the natural nail plate that covers the matrix
Correct Answer
A. Eponychium
Explanation
The eponychium is the correct answer because it refers to the living skin at the base of the natural nail plate that covers the matrix. It acts as a protective barrier and helps to prevent bacteria and other harmful substances from entering the nail bed. The eponychium is also commonly known as the "cuticle," although technically the cuticle refers to the dead, non-living tissue that overlaps the eponychium.
5.
Nail that extends over the tip of the finger or toe.
Correct Answer
D. Free edge
Explanation
The free edge refers to the part of the nail that extends beyond the tip of the finger or toe. It is the visible part of the nail that can be trimmed and shaped. The sidewall is the area where the nail and skin meet on the sides, the nail bed is the area underneath the nail plate, and the lanula is the white, crescent-shaped area at the base of the nail. None of these options accurately describe the part of the nail that extends over the tip, making "free edge" the correct answer.
6.
The layer of skin that lies between the fingertip and the free edge of the natural nail plate.
Correct Answer
B. Hyponychium
Explanation
The hyponychium is the layer of skin that lies between the fingertip and the free edge of the natural nail plate. It helps to seal the nail bed and protect it from infection. The eponychium refers to the cuticle, the nail folds are the skin on the sides of the nail, and the nail grooves are the depressions on the sides of the nail.
7.
A tough band of fibrous tissue that connects bones and holds organs in place.
Correct Answer
D. Ligament
Explanation
A ligament is a tough band of fibrous tissue that connects bones and holds organs in place. Ligaments are flexible yet strong, allowing for movement while providing stability and support to the joints. They play a crucial role in maintaining the structural integrity of the body and preventing excessive movement or dislocation of bones. Unlike the other options listed (nail cuticle, sidewall, natural nail unit), ligaments are not specific to the nails or skin but are found throughout the body.
8.
The white half-moon shape at the base of the nail.
Correct Answer
C. Lanula
Explanation
The correct answer is "lanula." The lanula is the white half-moon shape at the base of the nail. It is a visible part of the nail matrix, which is responsible for producing the cells that make up the nail plate. The lanula appears white because it is thicker and less transparent than the rest of the nail plate. It is often used as a reference point for nail health and growth.
9.
Nail plate cells that are formed and composed of matrix cells that produce the nail plate.
Correct Answer
C. Matrix
Explanation
The matrix is the correct answer because it is the part of the nail where the nail plate cells are formed and composed. The matrix cells are responsible for producing the nail plate, which is the hard, visible part of the nail. The hyponychium is the area of skin beneath the free edge of the nail, the nail bed is the area beneath the nail plate, and the natural nail refers to the entire nail unit.
10.
The portion of the living skin that supports the nail plate as it grows toward the free edge.
Correct Answer
A. Nail bed
Explanation
The nail bed is the correct answer because it is the portion of the living skin that supports the nail plate as it grows towards the free edge. The nail bed is responsible for nourishing the nail plate and providing it with the necessary nutrients for growth. It also helps in anchoring the nail plate firmly to the finger or toe.
11.
Dead colorless tissue attached to the natural nail plate.
Correct Answer
D. Nail cuticle
Explanation
The nail cuticle refers to the dead colorless tissue that is attached to the natural nail plate. It acts as a protective barrier, sealing the area between the nail plate and the skin, preventing bacteria and other harmful substances from entering. The cuticle also helps to retain moisture, keeping the nails and surrounding skin hydrated.
12.
Folds of normal skin that surround the natural nail plate.
Correct Answer
B. Nail folds
Explanation
The correct answer is "nail folds" because the question is asking for the folds of normal skin that surround the natural nail plate. The nail folds are the folds of skin on either side of the nail plate, which help to protect and support the nail.
13.
Slits or furrows on the sides of the sidewall.
Correct Answer
A. Nail grooves
Explanation
The slits or furrows on the sides of the sidewall are known as nail grooves. These grooves provide a channel for the nail to grow and help in anchoring the nail to the surrounding tissues. They also play a role in the overall strength and stability of the nail.
14.
A hardened Keratin plate that sits on and covers the natural nail bed.
Correct Answer
C. Nail plate
Explanation
The correct answer is nail plate. The nail plate refers to the hardened Keratin plate that sits on and covers the natural nail bed. It is the visible part of the nail that we see and can be painted or decorated. The nail plate is responsible for protecting the delicate nail bed underneath and provides structural support to the entire nail.
15.
A hard protective plate composed of Keratin. Also known as the onyx.
Correct Answer
A. Natural nail
Explanation
The correct answer is "natural nail." This is because the description provided in the question matches the characteristics of a natural nail. A natural nail is a hard protective plate composed of Keratin, which is the same material that makes up hair and the outer layer of skin. It is also commonly referred to as the onyx.
16.
Major parts of the fingernail including the nail plate, nail bed, matrix, cuticle, etc, that form the nail unit.
Correct Answer
C. Natural nail unit
Explanation
The term "natural nail unit" refers to all the major parts of the fingernail, including the nail plate, nail bed, matrix, and cuticle. These components work together to form the complete nail. Therefore, the answer "natural nail unit" accurately describes the collection of these parts.
17.
Lateral nail fold. Skin overlapping the side of the nail.
Correct Answer
D. Sidewall
Explanation
The correct answer is "sidewall." The sidewall refers to the skin overlapping the side of the nail. It is the area where the nail meets the skin on the sides.
18.
A fingernail replacement takes approximately _________months.
Correct Answer
B. 4-6 months
Explanation
A fingernail replacement takes approximately 4-6 months because it takes time for a new nail to grow and fully replace the old one. The process of nail growth is gradual and can vary from person to person, but on average it takes several months for a new nail to fully form. During this time, the old nail may gradually detach and fall off, allowing the new nail to take its place.
19.
A toenail replacement takes approximately __________months.
Correct Answer
A. 9-12 months
Explanation
A toenail replacement takes approximately 9-12 months because the process of growing a new toenail can be slow. It involves the regrowth of the nail bed and the gradual development of a new nail. This process can vary depending on various factors such as the individual's overall health, the extent of damage to the nail bed, and proper care and hygiene. Therefore, it is expected that it would take several months for a complete toenail replacement to occur.
20.
On which finger does the nail grow the slowest.
Correct Answer
D. Thumb
Explanation
The nail on the thumb grows the slowest because it has the least amount of blood flow compared to the other fingers. The blood flow to the nail bed is essential for nail growth, and since the thumb is physically smaller than the other fingers, it receives less blood supply, resulting in slower nail growth.
21.
On which finger does the nail grow the fastest.
Correct Answer
A. Middle finger
Explanation
The nail on the middle finger grows the fastest because it has the most blood flow and is the longest finger. The blood carries nutrients and oxygen to the nail bed, promoting faster growth. Additionally, the middle finger is often used more frequently than the other fingers, which can stimulate nail growth.
22.
Removes dead cuticle off of the nail plate.
Correct Answer
C. Cuticle removers
Explanation
Cuticle removers are the correct answer because they are specifically designed to remove dead cuticle from the nail plate. Water, cuticle moisturizers, and scrapping it off may not effectively remove the dead cuticle, while cuticle removers are formulated to dissolve and soften the cuticle, making it easier to remove without causing damage to the nail plate.
23.
Nail beds are live cells so they need the following.
Correct Answer
A. Oxygen, vitamins, minerals
Explanation
Nail beds are live cells that require oxygen, vitamins, and minerals for their growth and health. Oxygen is essential for cellular respiration and the delivery of nutrients to the nail bed cells. Vitamins, such as biotin and vitamin E, promote nail growth and strengthen the nails. Minerals like calcium and iron are necessary for maintaining the structure and strength of the nails. Therefore, providing the nail beds with oxygen, vitamins, and minerals is necessary to support their proper functioning and overall nail health.
24.
Water content of a nail is
Correct Answer
B. 15-25%
Explanation
The correct answer is 15-25%. This range represents the water content of a nail. Nails are made of keratin, a protein that contains water. The moisture content of a nail can vary depending on factors such as hydration levels and environmental conditions. The 15-25% range indicates a moderate level of water content in the nail, which is considered normal and healthy.
25.
Nail beds do not perspire therefore they do not have
Correct Answer
D. Sudioferus glands
Explanation
Nail beds do not perspire because they do not have sudoriferous glands. Sudoriferous glands are responsible for producing sweat, which helps regulate body temperature. Since nail beds do not have these glands, they do not perspire.