10
Sep
Alpha And Beta Receptors For Dummies. In the periphery alpha 1 receptors are located postsynaptically mediating the excitatory effects of catecholamines at alpha receptors. Subtypes of both alpha and beta adrenoceptors exist. There are several types of alpha and beta receptors. Alpha receptors can cause stimulation and constriction.
Useful generalizations concerning these are. Alpha receptors can cause stimulation and constriction. Specifically alpha receptors are found in arteries effector tissues and vascular smooth muscles while beta receptors are mainly located in involuntary muscles such as uterine bronchi and cardiac muscles. Both norepinephrine and epinephrine can act on beta receptors however epinephrine generally has a higher affinity. Whereas beta receptors can cause relaxation and dilatation. Alpha and beta receptor drug properties are discussed within this video.
Activation of alpha 1 and beta 1 receptors cause stimulatory responses.
There are two categories of receptors alpha and beta. The adrenergic receptors are divided into two types. There are also subtypes of each. Alpha receptors can cause stimulation and constriction. Both alpha and beta receptors are innervated by the sympathetic nervous system. Beta adrenergic receptors are one of two main adrenergic receptors the other being alpha receptors.