Generally we think that nails are the merely an ordinary part of our body. But it is wrong. If it is so, What are the functions of the nail ??? Let’s go to the concept.
STRUCTURE OF NAILS
Nails are made up of heavy keratinized cells filled with keratin protein.
- Free edge – Outermost whitish part ( dead cells )
- Nail body – It is the pinkish part and attached to the blood vessels & muscle plate of fingers & toes.
- Nail bed – Below the nail body the nail bed is present which is a muscular layer.
- Lunula – Whitish half moon like structure at the base of the nail.
- Cuticle – A narrow layer of skin below the lunula.
- Nail root – It is the origin of nail present under the skin otherwise called matrix. From this nail cells are grows.
SIDE VIEW IMAGE
HOW DOES THE NAIL GROW ?
Nail grows by a process called as keratinization. The matrix of nail presents in nail root. It is fully loaded by the keratinized cells. These cells are divided by mitosis and generate new keratinized cells (nail cells). Then the new cells push the old cells outwards & when the old cells arrive at the free edge, they are dead.
Finger nails grow about 3 mm per month. Toes nails grow 1 mm per month. Nails are heavily grow in summer. Because in summer we move a lot & blood circulation is more as compared to other seasons. So due to over circulation, the division of nails are more & they grow gradually.
FUNCTION OF NAIL
The main function is to protect our tip of the finger & toes from injury, helps in holding things, helps in climb & itching.