Difference Between Epidermis and Dermis

Skin is the largest organ in most mammals, especially in human beings. It is the first part of us that encounters a foreign particle. Our skin has different layers and each of these layers have their own properties and functions.

Epidermis vs Dermis

The main difference between Epidermis and Dermis is the position of the layer. The epidermis is the outermost exposed part of the skin, whereas the dermis lies beneath the epidermis—the difference in their composition, texture, and nature. The epidermis is the most exposed layer of the skin, and it protects the inner layers of the skin, cells, and tissues.

Epidermis vs Dermis

The epidermis is the outermost layer of the human skin. It plays the important role of protecting the delicate inner layers from the external foreign particles. The keratinocytes are the cells that form the epidermis.

The dermis is the layer of the skin that is present just under the epidermis. Fat, fibers, collagen, and blood vessels compose this layer of the skin. It has more flexibility and elasticity.

Comparison Table Between Epidermis and Dermis

Parameters of ComparisonEpidermisDermis
PresenceThe epidermis is the outermost layer among the three layers of the skin in an organism. The dermis is the layer of the skin just below the epidermis.
Blood Vessels Blood vessels are not present in the epidermis. Blood vessels, which are a tiny network of blood capillaries, are present in the dermis.
NervesNerves are not present in the epidermis. Nerves are present in the dermis.
Found in Both plants and animals have epidermis.        Only animals have dermis.
Absorption of NutrientsEssential nutrients are absorbed through diffusion from the dermis.       Oxygen and essential nutrients are absorbed through the blood capillaries.

What is Epidermis?

The epidermis is a unicellular layer that is the outermost covering of plants and animals. It acts as a barrier between the environment and the organism. The epidermis is responsible for the prevention and reduction of water loss.

The epidermis is the home for the melanocytes, which account for the skin tone. This layer has keratin as its base. It is made up of keratinocytes and round-shaped squamous cells, which are called basal cells.

This is a multilayered structure. It is called the basement membrane as it is responsible for the formation of dermo-epidermal junction.

This has to lead to four more layers within the epidermis, and these are namely the Stratum basale, Stratum spinosum, Stratum granulosum, Stratum corneum.

epidermis

What is Dermis?

The dermis is also known as the sodium, is the layer between the epidermis and the tissues called the subcutaneous tissues. The dermis is further classified into two types.

It also consists of elastic fibers, and they account for the elasticity and firmness of the skin. This layer consists of blood vessels that are responsible for providing nourishment and also removes the gunks out from the layers.

This gives strength, extensibility, and elasticity. It is a thicker layer of the skin. The dermis is the depositary of the bone, and it is known as the earliest evolutionary layer of the skin.

It is also the home of hair follicles. The dermis is further divided into two layers known as the papillary dermis, and the bottom is known as the reticular dermis.

Main Differences Between Epidermis and Dermis

  1. The epidermis is found in both animals and plants. The dermis is found only in the skin of animals.
  2. The epidermis is made up of keratinocytes, cells containing high amounts o keratin. The dermis consists of sweat glands and hair follicles.
Difference Between Epidermis and Dermis

Conclusion

The dermis and epidermis are two layers of the skin where. The outermost layer is the epidermis, and it is connected to the innermost layer called the dermis.

In this membrane, the papillary and the reticular layers are combined without any demarcation. The epidermis is the topmost layer that shields the skin, and it is also encountered a lot of foreign particles.

References

  1. https://onlinelibrary.wiley.com/doi/abs/10.1046/j.1525-1594.2000.06334.x
  2. https://physoc.onlinelibrary.wiley.com/doi/abs/10.1113/jphysiol.2001.013067
AskAnyDifference HomeClick here
Search for "Ask Any Difference" on Google. Rate this post!
[Total: 0]
One request?

I’ve put so much effort writing this blog post to provide value to you. It’ll be very helpful for me, if you consider sharing it on social media or with your friends/family. SHARING IS ♥️

Subscribe
Notify of
guest
0 Comments
Inline Feedbacks
View all comments