What Is The Epithelial Tissue?
The epithelial tissue is the tissue that lines the surface of the body, both internal and external surfaces. Epithelial tissue is divided into three namely epithelium, endothelium, and mesothelium. Epithelial tissue is the epithelial tissue that lines the outer surface of the body. The endothelium is a tissue that limits internal organs. While mesothelium is the epithelial tissue that limits the cavity.Epithelial tissue is unicellular and multicellular arranged compact and has no intercellular space. There are many functions of the epithelial tissue, but the primary function of epithelial tissue is as a protective coating that protects the underlying tissue. The location of epithelial tissue is located along the digestive system which aids in the absorption of nutrients the body needs from the digestive process. secretion of enzymes and hormones and the excretion of byproducts that do not chill like in the kidneys and sweat glands. In the lung region, the epithelial layer helps to spread oxygen in all parts of the body and that of the eyes, nose, and tongue is to increase sensitivity.
The function of Epithelial Tissue
Apart from the main function, there is also a special function of epithelial tissue based on each location of the epithelial tissue. The special function of epithelial tissue is as follows.
1. For protection, epithelial cells in the skin function to protect the underlying tissue from mechanical tissue, chemicals, bacteria entering and from excessive or excessive water loss.
2. As an Impulse Receiver, special epithelial cells are penetrated from sensory stimuli where epithelial cells have sensory nerve endings located on the ears, skin, tongue, and nose.
3. As an Absorption Tool, epithelial cells that line the small intestine absorb nutrients from the digestion of food.
4. As a Secretion Tool, In the gland, special epithelial tissue to remove certain chemicals such as hormones, lubricants, and enzymes.
5. As a Filtration or Filtration Tool, the ciliated epithelium assists in removing dust and foreign matter particles from the airways.
6. As an Excretory Tool, the epithelial tissue of the kidneys excrete the waste products from the body and absorbs the necessary material from the urine. Sweat is also excreted from the body by epithelial cells in the sweat glands.
7. Reduces Friction, smooth, tightly linked epithelial cells that coat the entire circulatory system reduces friction between blood and blood vessel walls.
8. As a Diffusion Tool, simple epithelium increases the diffusion of gases, liquids, and nutrients. Because they form a thin layer, they are ideal for gas diffusions such as in capillary and lung walls.
Types of Epithelial Tissue and Their Functions
The epithelial tissue was grouped into two types of constituent cell layers. the epithelial tissue cell constituent network is a single-epithelial epithelial and epithelial tissue.1. Types of Layer Epithelial Tissue (Simple epithelium)
Flat-layer epithelium, flat epithelial layer serves as a pathway in the exchange of substances from the outside into the body and vice versa. For example, the epithelium is present in the lymph vessels, Browman capsules, peritoneum builders, alveolus, and blood vessels.
Cuboid epithelial layer, The function of cuboid epithelial tissue layer is as a means of secretion and protection. Examples of cuboid epithelial layers are the surface of the ovaries, thyroid gland, kidney nephron channel and retina of the eye.
Epithelial Cylindrical Epithelium, Cylindrical epithelial cells exist that have cilia on their surface areas, such as the oviduct. Examples of epithelial cylindrical coatings are the gallbladder, stomach, upper respiratory tract, and intestinal jot.
Ciliated Trunk Epithelium, Epicentral stem epic is located on the nasal cavity wall. The function of ciliated trunks is as a producer of mucus (mucus) to capture incoming foreign bodies, with the cilia vibrating away the incoming foreign object attached to the mucus. The epithelial ciliated epithelium is located in the trachea.
2. Types of Layered Epithelial Tissue (Stratified epithelium)
Plated epithelial epithelium, epithelial tissue in the vertebrate skin epidermis.
Layered cuboid epithelium, epithelial tissue rarely present in the body. The layered cuboid epithelium is present only in large tracts of several glands. The layered cuboid epithelium is present in the salivary glands, contributing to excretion, mammary glands, and esophageal base.
Layered cylindrical epithelium, epithelial tissue rarely found and consisting of two layers. The function of layered epithelial tissue is to place adsorption, excretion, as a protective movement of substances over the surface and as a channel of excretion of salivary glands and mammary glands. For example, the epithelium of the palpebral conjunctiva.
Transitional epithelial, epithelial tissue that is shapely altered. Transitional epithelium is present in the ureters and kidneys
Characteristics of Epithelial Tissue
The characteristics and properties of epithelial tissue are as follows.
a. Characteristics of Epithelial Tissue
- Can be found all over the body
- Shaped flat, stem and cube
- The shape of the constituent cells varies depending on the function and location
- There is no material between the constituent cells
- In closing and glands
- Composed cell and molecular extracellular in the form of a matrix that is used to bind the tissue with the bottom
- Has a surface unrelated to other tissues, while on the other surface corresponds to the lower membrane.
- Some types of epithelium indicate a specialization that is a network bulge to expand the surface, move foreign particles or for movement
b. Properties of Epithelial Tissue
- Consists of a layer or several layers of cells
- Has regeneration properties (regrowth)
- Generally equipped with microvilli, flagella, and stereocilia.
- The shape of the constituent cells varies depending on the function and its location within the body
- There is lamina basal, lamina basalis is an extracellular structure in the form of a sheet by binding the network under it.
Thus information Definition, Function, Types, Characteristics of Epitel Networks. Hopefully, friends can receive and benefit us all whether it is the epithelial tissue, the function of epithelial tissue, the types of epithelial tissue, and the characteristics of the epithelial tissue.