Ava Monroe
The actively growing part of the nail is known as the nail matrix, which is the area where new cells are formed. The nail matrix is located under the base of the nail, beneath the skin, and is made up of two parts: the germinal matrix and the sterile matrix. The germinal matrix is responsible for about 90% of nail growth, while the remaining 10% comes from the sterile matrix, which also plays a crucial role in keeping the nail attached to the underlying skin. The lunula, the white crescent shape at the base of the nail, is the only visible part of the nail matrix.
| Characteristics | Values |
|---|---|
| Name | Nail matrix, germinal matrix, or active tissue |
| Location | Under the skin at the nail's proximal end under the epidermis |
| Appearance | White crescent shape at the base of the nail |
| Function | Generates cells that become the nail plate |
| Composition | Nerves, lymph, and blood vessels |
| Growth | Occurs in the anagen, catagen, and telogen phases |
| Anagen Phase | Cells at the base of the nails divide rapidly and push older cells forward |
| Catagen Phase | Transitional phase with decreased cell division, causing the nail to slow down |
| Telogen Phase | Nails are in a resting state |
Explore related products
What You'll Learn
The nail matrix is the actively growing part of the nail
The nail matrix has two parts: the germinal matrix and the sterile matrix. The germinal matrix is located under the base of the nail and produces about 90% of the cells that make up the nail plate. The sterile matrix, also known as the nail bed, lies underneath the nail and is responsible for the remaining 10% of the cells. It plays a crucial role in keeping the nail attached to the underlying skin.
The lunula, the white crescent shape at the base of the nail, is the only visible part of the nail matrix. However, some people do not have visible lunulas, which is entirely normal. The lunula is part of the germinal matrix, where new cells are generated. These cells then advance forward to form the nail plate, pushed by the continuous production of new cells beneath them.
Injuries, certain health conditions, and medications can damage the nail matrix and interfere with nail growth. For example, pinching or crushing the finger or dropping something heavy on the toe can injure the nail matrix, potentially causing the nail to fall off. Serious illnesses, such as a heart attack, COVID-19, or pneumonia, can also interrupt nail growth and cause horizontal ridges known as Beau's lines. Chemotherapy and other medications may lead to Beau's lines or slow nail growth and cause temporary colour changes in the nails.
In rare cases, permanent damage to the nail matrix can prevent the nail from growing back. However, in most instances, the nail will start to grow again once the nail matrix heals, although it may take several weeks for the new nail to become visible.
The Dirt on Nails: What's Lurking Beneath?
You may want to see also
Explore related products
The germinal matrix is responsible for 90% of nail growth
The actively growing part of the nail is the nail matrix, which lies beneath the skin at the inner edge of the nail plate. The nail matrix is made up of two parts: the germinal matrix and the sterile matrix. The germinal matrix is the part of the nail bed that is beneath the nail and contains nerves, lymph, and blood vessels. It is responsible for producing new cells that grow and move outward from the nail root to the nail plate, forming the nail.
The germinal matrix is the most critical component of the nail matrix, contributing to approximately 90% of nail growth. It generates the cells that become the nail plate, with the width and thickness of the nail plate determined by the size, length, and thickness of the germinal matrix. The nail plate, also known as the nail body, is the visible hard nail area that extends from the nail root to the free edge. It is made of translucent keratin protein, with several layers of dead, compacted cells that give the nail its strength and flexibility.
During the anagen phase of nail growth, the cells at the base of the nail matrix divide rapidly and push older cells forward. This active growth phase generally lasts for about two to three months. The catagen phase follows, during which cell division slows down, causing the nail to grow at a slower rate. This transitional phase typically lasts for about two weeks. Finally, the nail enters the telogen phase, where it remains in a resting state.
Injuries, certain health conditions, and medications can damage the nail matrix and interfere with nail growth. For example, pinching or crushing the finger or dropping something heavy on the toe can injure the nail matrix, potentially causing the nail to fall off. In severe cases of nail matrix damage, the nail may not grow back. Additionally, chemotherapy and other medications can temporarily affect the nail matrix, leading to slow nail growth or changes in nail colour and appearance.
In summary, the germinal matrix, as a vital part of the nail matrix, plays a crucial role in nail growth by producing the cells that form the nail plate. Its function is essential for maintaining healthy nails and protecting the underlying structures of the fingers and toes.
Preventing Nails Growing Inward: A Simple Guide
You may want to see also
Explore related products
The sterile matrix keeps the nail attached to the skin
The nail matrix is the actively growing part of the nail. It is divided into two parts: the germinal matrix and the sterile matrix. The germinal matrix is responsible for about 90% of nail growth, while the sterile matrix accounts for the remaining 10%.
The sterile matrix is located underneath the nail, at the inner edge of the nail plate. It plays a crucial role in keeping the nail attached to the underlying skin. This attachment allows the nail to function as a tool for scratching, grooming, and providing an extended precision grip. The nail's attachment to the skin also enhances the sensitivity of the fingertip and protects the distal phalanx, the fingertip, and the surrounding soft tissues from injuries.
The nail plate, or the actual fingernail, is made of translucent keratin, a protein found in nails, hair, and skin that provides protection against infection. The pinkish appearance of the nail is due to the blood vessels underneath it. The nail bed, which is part of the nail's underlying structure, supplies the nail plate with necessary nutrients and contributes to its thickness.
The sterile matrix is not typically visible, but the lunula, a white crescent shape at the base of the nail, is the only visible part of the nail matrix. The lunula is sometimes not visible, which is considered normal. The lunula is also known as the nail sinus, where the nail root is located underneath the skin.
Injuries or certain health conditions can damage the nail matrix, including the sterile matrix, and interfere with nail growth. A severe injury may cause the nail to fall off, and in cases of severe matrix damage, the nail may not grow back. Illnesses such as heart attacks, COVID-19, pneumonia, and chemotherapy can also affect nail growth and cause Beau's lines (horizontal ridges) or slow nail growth.
Damaged Nail Growth: Why the Difference?
You may want to see also
Explore related products
The lunula is the only visible part of the nail matrix
The actively growing part of a nail is known as the nail matrix, which is a groove in the dermis of the skin. The nail matrix is made up of two parts: the germinal matrix and the sterile matrix. The germinal matrix is responsible for about 90% of nail growth, while the remaining 10% comes from the sterile matrix, which also keeps the nail attached to the underlying skin.
The nail matrix is located underneath the skin, at the inner edge of the nail plate, and is not visible. However, a small part of it, called the lunula, can be seen at the base of the nail. The lunula is a whitish, crescent-moon-shaped area that is not attached to the underlying nail bed. It is sometimes referred to as a "half-moon" due to its shape. The word "lunula" comes from the Latin word for "small moon".
Not everyone has a visible lunula, but this is normal. The lunula is the only part of the nail matrix that is typically visible, as the rest of the matrix lies beneath the skin and is not exposed.
The nail matrix is an important structure as it is responsible for nail growth. It generates new cells that harden as they move outward from the nail root to the nail plate, forming the visible part of the nail. These cells are pushed forward as new cells form behind them, contributing to the growth of the nail.
Uneven Nail Growth: Why the Difference?
You may want to see also
Explore related products
Nail growth occurs in three phases: the anagen, catagen, and telogen phases
The actively growing part of a nail is known as the nail matrix or germinal matrix. It is the part of the nail bed that lies beneath the nail and contains nerves, lymph, and blood vessels. The nail matrix produces cells that become the nail plate, which is the visible hard nail area extending from the nail root to the free edge.
The nail matrix has two parts: the germinal matrix and the sterile matrix. About 90% of nail growth comes from the germinal matrix, while the remaining 10% comes from the sterile matrix, which is more important for keeping the nail attached to the underlying skin. The nail root, or lunula, is the visible white crescent-shaped part of the nail matrix. It produces most of the volume of the nail and the nail bed.
The nail bed is the area under the nail plate, extending from the edge of the nail root to the tissue known as the hyponychium. It is richly vascularized, supplying the nail plate with necessary nutrients. The nail plate is made of translucent keratin protein, with several layers of dead, compacted cells that make the nail strong but flexible. The width and thickness of the nail plate are determined by the size, length, and thickness of the matrix, while the shape of the fingertip bone determines whether the nail plate is flat, arched, or hooked.
Virgin Olive Oil: The Secret to Stronger, Longer Nails?
You may want to see also
Frequently asked questions
The actively growing part of the nail is called the nail matrix, specifically the germinal matrix. It is the part of the nail bed that is beneath the nail and contains nerves, lymph, and blood vessels.
The nail matrix is the active tissue that generates cells. The cells harden as they move outward from the nail root to the nail plate. The matrix produces cells that become the nail plate.
The only visible part of the nail matrix is the lunula, the white crescent shape at the base of the nail. However, some people don’t have visible lunulas, and that’s normal, too.
