The cytoskeleton provides support in a cell. It is a network of protein fibers supporting cell shape and anchoring organelles within the cell. The three main structural components of the cytoskeleton are microtubules (formed by tubulins) , microfilaments (formed be actins) and intermediate filaments.
epinephrine binds to beta 2 receptors to relax airway smooth muscle and relaxes larger arteries to supply more blood to metabolizing tissues What is theophylline? an inhibitor of phosphodiesterase so it will potentiate the effect of epinephrine and inhibit cAMP breakdown to relax smooth muscle
Epinephrine, also known as adrenalin, is a hormone that is responsible for the fight or flight reaction in mammals. Chemically, it mobilizes the body's defense system, inducing the release into the blood of large amounts of glucose from stores in the liver and muscles.ndeed, during the fight or flight reaction, the organism needs to release energy in the form of glucose and fatty acids rather than store energy as glycogen or fat. Figure 1. Chemical structure of epinephrine. Clinically, epinephrine plays a lifesaving role in countering the effects of anaphylactic shock.