A simple epithelium has cells that form a single layer that are attached to the basement membrane. A stratified epithelium, on the other hand, consists of multiple layers of cells where only the basal layers are attached to the basement membrane.Know More
The epithelium is one of the four major tissues in the body. It is made up of cells that are usually arranged in sheets or tubules that are connected to the underlying basement membrane. The epithelium serves as a covering for a number of internal and external surfaces of the body, and it can form glandular structures.
Different types of epithelia are classified according to the shape of the cells and whether or not the cells are layered. A simple epithelium may also appear as stratified and this type is classified as "pseudostratified epithelium." The cells that make up the epithelium are classified according to shape. These classifications are squamous (flat), cuboidal and columnar.Learn More
Transudate and exudate are both fluids extruded from various parts of the body, but transudate is usually clear and relatively free of cells and proteins while exudate has a high content of cells, cellular debris and proteins. The terms "transudate" and "exudate" refer to the fluid itself and not to a specific ailment or injury. However, the terms are often associated with transudate pleural effusion and exudate pleural effusion.Full Answer >
Mildew is generally white or grey, and mold is black or green. Mold normally grows on food, and mildew grows on damp surfaces. Mildew has a flat growth, while mold has a multicellular or complex form.Full Answer >
Dopamine is a neurotransmitter associated with the pleasure centers of the brain. It is responsible for feelings related to love, joy, pleasure, reward and motivation. Serotonin is also a neurotransmitter and helps to regulate mood, irritability, impulse, obsession and memory.Full Answer >
Osmosis is a particular type of diffusion in which water crosses a semi-permeable membrane to an area with a greater solute concentration, whereas standard diffusion often allows the free movement of both solutes and solvent toward equilibrium. Diffusion in general is the net movement of molecules in solution from areas of higher concentration to areas of lower concentration. Osmotic pressure is potentially very powerful, with osmotic pressure being the only force necessary to move water from the roots to the tops of the tallest trees in the world.Full Answer >