1 Use crutches to take the weight off your injured leg. 2  Wrap your thigh snugly with a large elastic wrap until you see your doctor.  Use ice packs or cold packs over the injured hamstring. Put the ice pack or cold pack over the elastic wrap and hold it in place with plastic wrap.
Alpha receptors have two main types: alpha 1 and alpha 2. These alpha receptors play very important roles. Generally, the alpha receptors contribute large effects on our bodyâs systems. With regards to our vascular, smooth muscles, alpha receptors can constrict the vessels of our skin and skeletal muscles.
Alpha receptors and beta receptors are both located postsynaptically at the sympathetic junctions of several organs. You can find these receptors in the heart, blood vessels, airways, uterus, fatty tissues, and many other areas. There are two main types of alpha receptors: alpha 1 and alpha 2. There are three main types of beta receptors: beta 1, beta 2, and beta 3. Alpha receptors are mostly involved in the stimulation of effector cells and constriction of blood vessels.