Animal Body and Principles of Regulation
Name the 3 tissues in a developing embryo
Name the 4 primary tissues in adult vertebrates
What is a tissue?
A tissue is a group of cells with similar shape and function.
What is an organ?
What are some characteristics of epithelial cells? Give a few examples of tissue/ organs made of epithelial cells
What are the 2 classes of epithelial tissue? And how can epithelial cells be subdivided based on their shape?
The 2 classes of epithelial tissue are simple and stratefied. Where simple is one layer thich and stratefied is multiple layers thick. These 2 classes can be further divided into three categories: squamous cells - flat; cubodial cells - cube shaped and columnar cells - cylindar shaped.
What are some characteristics of conncetive tissue? Give examples
How is epithelial tissue different from connective tissue?
What is extracellular matrix made of? Who secretes it?
The extracellular matrix is made up of protein fibers for example collagen and elastin and ground substance which includes proteins and polysacharides. This is secreted by fibroblasts cells.