Why is the skin described as a waterproof wrapper?

Answer 1

The main skin cell on the top layer of skin is called the keratinocyte. This cell produces a tough protein called keratin, which protects the skin from damage and prevents water from entering.

Answer 2

Skin is made up of 2 distinct principle layers called the dermis and the epidermis. The epidermis is much thinner than the dermis and it is this layer that has contact with the air. The epidermis itself is made up of a number of different layers, called strata, of which there is the strata corneum, the spinosum, the basale, the granulosum and the stratum lucidum.

The very outer layer of the epidermis is the strata corneum, and is composed of between 25 to 30 rows of flat, dead cells which are filled with keratin, which is any class of fibrous protein molecule. Keratin is extremely resisitant to water and chemicals, and it is this inherent property that gives skin the same protective traits.

Where areas of the body are subjected to high levels of friction, such as the hands and the soles of the feet, the epidermis has evolved to be much thicker compared with the remaining majority of the skin. Friction, or abrasion, causes the formation of callus, an extra thickening of the epidermis. This is the bodies natural defence mechanism to combat frictional forces. Without it, the epidermis would be eroded away at these frictional points, exposing the softer more vulnerable under tissues to all the foreign substances and organisms that exist outside the body.

Answer 3

The cells of the epidermis produce a mixture of sphingolipids, phospholipids and ceremide that fills the extracellular space between epidemal cells. This makes the epidermis impearmeable to water.

Answer 4

Human skin with slowly absorb water although it is water resistant for a short time. Skin is designed to be a huge barrier protecting our bodies against potentially harmful substances. But, when it comes to hydration and absorbing nutrients through skincare products, it is an excellent organ

Answer 5

The skin is described as a waterproof wrapper because it serves as a barrier that prevents water and other substances from passing through it easily. The outer layer of the skin, the epidermis, is made up of tightly packed cells that are designed to keep water out and protect the body from dehydration. Additionally, the skin produces oils and other substances that help to repel water and maintain its waterproof properties.

Answer 6

Desmosomes and tight junctions

Answer 7

keratin

Answer 8

Keratin