♥Tissue♥

The last lesson that we discussed is all about tissues ( this is kinda long one )

These are group of correlative cells that form a particular function. A collection of tissues designated to perform a specific function is called an organ. The four main types of tissues are : epithelial tissue, connective tissue, muscle tissue, and nervous tissue.

♥Epithelial tissue are formed by a layer of cells that covers organ surfaces in our body. Cells in this kind of tissue are packed tightly together and is forming a sheet that has no blood vessel in it. Epithelial tissue can be classified by their shapes and arrangement. This can be squamous (flat or scale like), cuboidal (cube- shaped), columnar (column like), and transitional (stretchy and variably shaped). In arrangement there is simple if it is single layer while stratified if it has several layers. ♥

♥The second type of tissue is the connective tissue, Connective tissue are the most common of all because it can be seen in organs, bones, nerves, muscles,membranes, and skin. Its job is to hold things together and provide structure and support. The types of connective tissue are areolar tissue and adipose tissue. Areolar tissue hold the organs together and help hold other connective tissues together on the other hand, Adipose tissue is the one responsible for the proper functioning of our body, example of adipose tissue is fat. ♥

♥The third type of tissues is the muscle tissue it consist of three kinds of muscle : Skeletal muscle, Cardiac muscle, and Smooth muscle. Skeletal musle are the ones attached to the bones and causes movement by contracting and relaxing. the cells in this tissue are long and fiber like with many nuclei in each cell, it is also classified as voluntary muscles because it has conscious effort to move or to relax. Cardiac musle is found in the walls of the heart. This is classified as involuntary muscle because it is unconcious by its movement. Smooth muscle tissues forms the walls of hollow organs, such as in our digestive system, this is also classified as involuntary muscle.♥

♥ The last type of tissue is nervous tissue. Nerve tissue acts as a rapid messenger service of the body. The two types of nervous tissue are neurons which acts as the conductor of information and glia (neuralgia) which supports by helping to hold neurons in place.♥

This is the last lesson of our 1st quarter period =)
For my suggestion? Uhm, none =) we really enjoyed it. We are satisfied!