Article. Bionic Body.

The article talked about how two struggling engineer scientists, Joseph Vacanti and Bob Langer, tried over and over again to try and create the perfect replacement tissue. Together, they tried to make it possible that if you were for example missing an ear or body part, you could take out biodegradable scaffold in your body to create it. For instance, they grew on a mouse showing how it worked properly with the body functions. The main idea I got that this could help with is when people get arthitis, there would now be a cure so you could create new muscular tissue in the body. It does mention also that it isn't an easy task to create this "perfect tissue-engineered cells."  Studies have came to show that it is easiest for tissue to become sheet like cartilage to form under pressure. And according to Naughton, liver tissue can form better in microgravity surroundings. All they really need now to make this process complete and successful is the "perfect" scaffold that can keep out waste and take in good nutrients. In the long run, this could be very helpful to society because we can use it to help make our bodies have the things we're lacking or prevent disease such as cardiovascular disease.
The main reason importance of this article is that it can help society in many different ways. This can help with if your missing important tissues you can just use other cells in your body to reproduce those cells using scaffold cells. It can also be a solution to disease you can form in your body because now you are able to get implants of these cells that aren't infected. You do need to mimick the enviroment in which your cells grow to produce this, but in the future I think they figure out an easier way to do this. It could one day be one of the greatest invention after they master creating the more complex organs . All this coming from two men that failed for so long, but now have one of the best creations known to man-kind. 

EPITHELIAL TISSUE.

Simple Squamous epithelial.

Characteristics: Single-layer of flattened cells and disc-like nuclei and sparse cytoplasm.
Function: diffusion and filteration and provide a slick, friction-reducing lining in the cardiovascular and lymphatic systems.
Found in: Kidneys, glomeruli, lining of heart, blood vessels, lymphatic vessels, and serosae

Simple Cuboidal

Characteristics: One single layer of cubelike cells with large, spherical central nuclei. This single layer of tall cells with oval nuclei may contain many cilia.
Functions: in secretion and absorption.
Found in: Nonciliated line digestive tract and gallbladder. . Ciliated line small bronchi, uterine tubes, and regions in the uterus.
The purpose of the cilia is to help move substances through internal passageways.


Simple Columnar

Characteristics: Single layer cubelike cells with large, spherical central nuclei
Function: in secretion and absorption.
Location: Kidneys tubules, ducts, secretory portions in small glands, and ovary surfaces.


Pseudostratified

Characterisics: Single layer of cels, with a variety of heights; some not reaching the free surface. The nuclei is seen at different layers.

Function: in secretion and propulsion of mucus.
Location: male sperm-carrying ducts (non-ciliated) and in trachea(ciliated) 


Stratified Squamous 

Characteristics: Thick membrane consisting of several layers of cells 

Function: Protection of the underlying areas subject to abrasion
Location: forms the external part of the skin's epidermis (keratinized cells) and the lining of the esophagus, mouth, and vagina (nonkeratinized cells)

Stratified Cuboidal and Columnar

Characteristics: Stratified cubodial is rare in the body, but found in some mammary and sweat glands. It can possibly be two layers thick.
Stratified columnar has limited distribution throughout the body.
Location: pharynx, male urethra, and lining some glandular ducts

Transitional: 

Characteristics: Several layers of cells, bascal cells are cuboidal, surface cells are dome shaped
Function: Stretched to permit the distension of the urinary bladder
Location: lines the urinary bladder, ureters, and parts of the urethra.

tissues. .