The Nail Unit
The Nail Unit — the collection of structures that produce and support the nail, including the nail plate, nail bed, matrix, cuticle, and surrounding folds. Together they generate the hard, protective covering over the tips of the fingers and toes.
Key points
- The nail matrix is the growth zone where new nail cells are formed and hardened into the visible plate.
- The nail plate rests on and is nourished by the nail bed, which gives nails their pink appearance through underlying blood vessels.
- The cuticle seals the space between the skin and nail plate, helping protect the matrix from irritants and infection.
- Fingernails grow faster than toenails, and overall growth can be influenced by age, health, and circulation.
Frequently asked
What causes the white half-moon at the base of the nail?
The pale crescent, called the lunula, is the visible part of the nail matrix where new nail is still forming before it fully hardens.
Why is it best not to cut the cuticle?
The cuticle seals and protects the growth area of the nail, so aggressively cutting it can increase the risk of irritation and infection; gently pushing it back is generally preferred.
Related topics
This is a foundational entry in the SYNC Skin Encyclopedia and is expanded over time. Educational information only — not medical advice.
