Tissue Types
Epithelial, Connective, Muscular, and Nervous
Epithelial Tissue
Epithelial tissue cells are tightly packed together to form a protective layer for the outside of our body, inside surfaces of our body, and the lining of cavities, tubes, ducts, and blood vessels. It is also the main type of tissue in glands.
Why is Eplithelial the best type of tissue for its function and location?
Since Epithelial tissue is so tightly packed it offers more protection for the inside and outside surfaces of our body. If a loosely packed group of cells created the outside tissue of our body then our skin would not be able to protect our bodies, and it would easily break. It is also essential that the glands in our bodies are made from tightly packed and rigid tissue so that it can protect the hormones before excretion.
More Tissues
Muscular Tissue
Skeletal muscle tissue is long, elastic, and connected to your bones to allow movement, which is its main function. Smooth muscle cells have a single centered nucleus, which makes them be able to contract slowly in a steady rhythm. this helps them with the function of controlling involuntary movement in internal organs. cardiac muscle cells are arranged in bundles to allow strong rhythmic contractions in the heart, which is its main function.
Connective Tissue
Loose connective tissue can stretch and move because of its loose connections between cells. Dense connective tissues are thick and dense which makes them good tendons to connect the muscle to bone. Cartilage is flexible yet strong because its matrix contains collagen fibers and a gel matrix. Bones can either be spongy or hard depending on how the cells are arranged in its matrix. The compactness of the bone allows it to do its main function of structure and support. The plasma in the blood's matrix allows it to flow freely and spread nutrients throughout the body.
Nervous Tissue
It is thin and has long thin branches called dendrites which help it to do its main function of transmitting information and messages throughout the body.
connective, muscular and nervous (from top to bottom)
Sources
https://en.wikipedia.org/wiki/Epithelium
http://anatomyofthefoot.com/muscle-tissue-cells.html
http://swc2.hccs.edu/biol/labs/ap1/tissues/cardiacMusc.htm
http://www.medicinenet.com/connective_tissue_disease/article.htm
http://study.com/cimages/multimages/16/imagesCAVKS9FK.jpg
http://www.stegen.k12.mo.us/tchrpges/sghs/ksulkowski/images/nerve.gif
http://study.com/academy/lesson/connective-tissue-types-functions-disorders.html