Week 7 – Discussion Board 1

[Art Liebl]

In at least 250 words talk about the  layers of skin and function of each one initial post due by Thursday Respond to two fellow students by Monday.

[Alejandra Gana]

there is 3 layers of skin.

Epidermis= top layer of skin and does not contain blood vessels.
epidermis also consists of melanocytes, which produce melanin, the dark pigment that gives skin its color, Merkel cells, which are thought to be involved in touch reception and Langerhans cells.

Dermis= middle layer of skin, and has two layers.
first layer called the papillary layer consists of the loose connective tissue.
second layer called reticular layer, is the deep layer of the dermis and consists of dense connective tissue.
the dermal layers provides a site for the endings of blood vessels and nerves. the structures for hair are in this layer of skin.

Hypodermis= also called subcutaneous tissue. is the deepest layer of the skin.
helps insulate the body and cushion internal organs.
blood vessels, lymph vessels, nerves and hair follicles also run through this layer of skin.

[Shannelys Guzman]

Great job separating the three! Very informative

[Emily Arias-Perez]

very good details

[Brian Pacheco]

Great explanation!

[Luanna Vieira Rosa]

I like how you seperated the three and the details!

[Shannelys Guzman]

As humans we are made up of organs that are constantly all working together to keep us alive. Not many know the skin is actually our largest organ, occupying about 15% of our weight. The human body’s largest organ is called the skin, which consists of three layers. Those layers are called the epidermis, dermis, and hypodermis. The epidermis is the surface skin, as I call it; it’s the one closest to the outside with no blood flow passing through it, and it ends up being our thinnest layer. A few strata make up the epidermis layer. It includes some cells that make keratin called keratinocytes. It also has melanocytes, which are what make our skin color. Making up this layer are also Merkel cells that are mechanoreceptors for our bodies’ ability to have sensation to touch. Lastly, Langerhans cells help the body respond via its immune system to certain things affecting the skin level. We then have the dermis layer in the middle. It is where strength lies, where our body can stretch with elasticity via collagen and elastin fibers. This middle layer is where the main things of our bodies live, like our hair follicles. It also is where we have our sweat glands, the sudoriferous glands, which are in charge of releasing excess waste. The oil glands called the sebaceous glands are also part of the dermis layer. A major part of this layer, I think the most important, is the way it holds the ending of nerves and blood vessels that give the body its feeling and pain and even our temperature information via relay sensations. The dermis is broken into two main layers: the papillary and the reticular. These both interlock, working together. One is thinner, containing tissues and our fine-touch receptors, while the other is deeper than the surface and thick, of course, since it’s where things like hair follicles, glands, and different vessels live. Lastly, the hypodermis is the innermost deep layer of skin the human body has. Its main composition is the body’s fat cells, also named adipose tissue, and the connective tissue for our organs to have cushion and warmth building up insulation. Our fat is stored by our body to be used to function and store fat to then convert it to energy when needed.

[Emily Arias-Perez]

great explanation.

[Brian Pacheco]

Great job explaining!

[Dayane Malone]

Thank you for sharing! sometimes its hard to even picture the skin being an organ.

[Emily Arias-Perez]

Skin is the largest organ of the body made up of water, protein, fats and minerals. Your skin protects your body from germs and regulates body temperature. Nerves in the skin help you feel sensations like hot and cold. Your skin is part of your body’s outer coverings known as the integumentary system. You have three main layers of skin the epidermis, dermis, and hypodermis (subcutaneous tissue).
– The epidermis is essential for protecting the body from external threats. Its continuous regeneration and immune capabilities further enhance its role in overall skin health. The main functions of epidermis are protection barrier, hydration, melanin production, regeneration, sensory function and immune response.
-Your dermis is the middle layer of skin in your body. It has many different purposes, including protecting your body from harm. These functions include supporting the epidermis, feeling different sensations, producing sweat, keeping the skin moist and producing hair.
– The hypodermis plays crucial roles in insulation, energy storage, protection, and connecting the skin to underlying structures. Its functions are vital for the body’s ability to adapt to environmental changes and maintain homeostasis.
The three layers of skin work together to protect the body, regulate temperature, and provide sensory information. Damage to any of these layers can lead to various skin issue.

[Shannelys Guzman]

Great job explaining!

[Brian Pacheco]

Great job!

[Dayane Malone]

It’s amazing to know that the skin is the largest organ.

[Luanna Vieira Rosa]

Very good explanation and organization!

[Brian Pacheco]

The skin is also known as the Integumentary system and is made up of 3 layers, the dermis, the epidermis and the hypodermis which is also called the subcutaneous layer. The skin is the body’s largest organ. Each layer has its own special function that work together and help the body work at its best potential. The 3 layers work as a system to protect the body, regulate internal conditions, and maintain overall health.

* The epidermis is the outermost layer of the skin, and it forms a protective barrier between the body and the outside environment. It is mostly made of keratinocytes that produce keratin, which is a tough protein that helps prevent water loss and shields the body from damage. The epidermis also contains melanocytes, which produce melanin, which is the pigment responsible for skin color and protects the deeper tissue from ultraviolet radiation. This layer also renews itself, shedding dead cells and replacing them with new healthy ones. Although the epidermis is thin it plays a huge role in preventing pathogens, chemicals, and irritants from entering the body.
* Right below the epidermis is the dermis, which is a thicker layer with connective tissue. The dermis contains collagen and elastin fibers, which give the skin its strength, flexibility, and elasticity. The dermis has structures including blood vessels, hair follicles, sweat glands, sebaceous glands, and nerve endings that help the skin to regulate temperature. They also produce sweat and oils as well as sense touch, pain, and pressure. The dermis also helps with wound healing because it provides nutrients to the epidermis.
* The Hypodermis is the deepest layer of the skin. Mostly made up of fat and connective tissue. This layer helps with insulation and maintaining heat. This layer also acts as a cushion to protects the organs from injury.

[Dayane Malone]

The skin has a very important job: it protects us from the outside world. Even though we usually think of skin as one single layer it is actually made up of three main layers. Each layer has its own structure and purpose, and all of them work together to keep our bodies safe and healthy. The three layers are the epidermis, the dermis, and the subcutaneous layer also called the hypodermis.

The epidermis is the top layer of the skin. It is the layer we can see and touch. Its main job is protection. The epidermis keeps germs, dirt, and harmful chemicals from entering the body. It also helps prevent water from escaping, which keeps our skin from drying out. The epidermis is always making new skin cells. Old cells on the surface eventually fall off, and newer ones rise to take their place. This constant renewal helps keep the skin healthy. The epidermis also contains melanocytes, which are the cells that produce melanin, the pigment that gives our skin its color and protects us from the sun.

Under the epidermis is the dermis, which is the middle layer. The dermis is thicker and much stronger because it contains collagen and elastic fibers. This layer gives the skin its strength and flexibility. The dermis also holds important structures like blood vessels, sweat glands, oil glands, hair follicles, and nerve endings. These structures help us feel sensations such as touch, pressure, and temperature. Sweat glands in the dermis help cool the body, while oil glands keep the skin soft and prevent dryness.

The deepest layer is the subcutaneous layer or hypodermis. This layer is made mostly of fat and connective tissue. Its main job is to act as cushioning to protect organs, muscles, and bones underneath. It also helps insulate the body by keeping warmth inside. The fat stored in this layer can also serve as an energy reserve for the body.

Together, these three layers of skin protect us, help regulate our temperature, allow us to feel sensations, and keep our bodies balanced.

[Luanna Vieira Rosa]

The skin has three main layers, and each one has its own job to help protect the body. The first layer is the epidermis, which is the outside layer we can see. Its main job is to act like a barrier. It keeps out germs, dirt, and anything harmful from the environment. The very top part is made of dead skin cells that fall off and get replaced all the time, which keeps the skin healthy. This layer also has melanin, which gives our skin color and protects us from the sun.

Under that is the dermis, which is thicker and has a lot more going on inside it. This layer has blood vessels, nerves, sweat glands, oil glands, and hair follicles. Because of this, the dermis helps us feel things like heat, cold, touch, and pain. It also produces sweat to cool us down and oil to keep the skin soft. The dermis contains collagen and elastin, which make the skin strong and stretchy so it doesn’t tear easily.

The deepest layer is the hypodermis, also called the subcutaneous layer. This layer is mostly made of fat and connective tissue. Its job is to protect the body by acting like a cushion, especially around important organs. It also helps control body temperature by keeping warmth in. The hypodermis also helps attach the skin to the muscles underneath it.

All three layers work together to protect the body, help us feel things, and keep our temperature balanced.

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