The Integumentary System
Created by: Madison Bosa and Lilly Crook
What is the Integumentary System?
Specific Ways Homeostasis is Maintained
The Three Layers of Skin
Epidermis
This is the outermost layer of the skin, and has many strata that are a part of it's layer. Strata are very thin layers of skin. There are four major cells associated with this layer:
1. Keratinocytes:
These cells make the skin water-proof, as well as flexible, and keep the skin strong, yet durable.
2. Melanocytes:
These cells make the melanin, or the pigment that controls the color of our skin.
3. Langerhan's Cells:
These cells work with the immune system to process and break down foreign bodies that may enter the skin.
4. Merkel's Cells:
The final cell that is most associated with the Epidermis would be these. They control the minor nerve receptors that control the touch and perception that we feel.
Function:
This is the outermost layer and it protects the other parts by expelling dead cells, and being more rigid.
Dermis
This layer is considered by many as "The True Skin." It has three major parts that make up the entirety of the Dermis. They are from outermost to innermost:
1. Papillary Layer:
This layer is made mostly of loose connective tissue, that receives some nutrients from the Epidermis.
2. Reticular Layer:
In contrast to the previous layer, this layer is made up of dense connective tissue, that gets a sufficient amount of nutrients. These two layers are very hard to differentiate between.
3. Pacinian Corpuscles:
This layer is located just inside/ bellow the Reticular layer. They are only separated by a few layers of Strata. This layer has many of the nerve receptors needed to feel deep pressure on the skin.
Function;
Provides protection for inner-layer and some nutrients to it's other layers and strata.
Hypodermis
This layer is the innermost layer of the skin. It nourishes the other layers. The layer is comprised mostly of fats and vitamins that give humans, especially girls, their bodily shape. It insulates the body by keeping in the necessary heat that your body needs, or in some cases, let it out.
Functions:
Holds the neurons and other follicles.
The Integumentary System's Interactions with Other Body Systems
The Two Interactions the System has
1. Nervous System
One of the interactions that this system has, is through the neurons embedded in your skin. They send messages to your brain and that is what gives you the sensations of the outside world, that you know of.
2. Immune System
The second main interaction it has is with the Immune System. The Immune Cells that are already embedded in your skin, work with the provide first line defense against pathogens.
What Would Happen if it Malfunctioned?
Email: madison.bosa@stu.oldham.kyschools.us
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