CAS BI 106 Study Guide - Midterm Guide: Simple Columnar Epithelium, Simple Squamous Epithelium, Transitional Epithelium

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Document Summary

We have 11 organ systems and 4 types of tissue in our body. Found in skin and lining of organ, cavities and blood vessels. Polarized with one apical side and one basal side. The nucleus is oriented towards basal side, which is in contact with other connective tissues. On the apical side there are micro li and cilia which are for movement, slightly larger and thicker, important for mucus and liquid movement. Avascular, no blood vessels (therefore rely on nearby or associated tissues for gas and nutrients) Cuboidal, roughly like cubes or round circles. Remember: the nucleus takes after the shape of the whole cell. Simple squamous epithelium one thin layer of at cells. They have attened nucleus and resemble fried eggs. Diffusion will occur quickly. found in low friction and moist areas (like lungs) Simple cuboidal epithelium one layer of round/square cells. Found in locations of transport like ducts and glands.