Anatomy and Physiology Module 2 Test 100% Correct!

Free surface - ANSWEROpen to the surroundings (top of cells) Basal surface - ANSWERThe underside of the cells Basement membrane - ANSWERA "glue" that is secreted by the cells and binds the cells to the underlying tissue. Is also avascular material Avascular - ANSWERLacking blood vessels Simple Epithelium - ANSWERComposed of a single layer of cells Stratified Epithelium - ANSWERComposed of cells arranged in layers Squamous - ANSWERFlat cells Cuboidal - ANSWERCells shaped like a cube Columnar - ANSWERCells tall like a column Simple Squamous Epithelium - ANSWERVery simple cells with very few organelles (not needed for their job) Avascular Oxygen and other nutrients diffuse into and out of the cells Offers very little protection because it is too thin Example: tiny air sacs in lungs Simple Cuboidal Epithelium - ANSWERThicker, larger cells More complex cells; more organelles Allow diffusion and absorption and secretion Example: Kidneys need to absorb certain chemicals and secrete others to keep our blood chemistry balanced Simple Columnar Epithelium - ANSWERMore cellular machinery (organelles)