About the CCC Credential. CCC stands for Certificate of Clinical Competence. The American Speech-Language-Hearing Association, or ASHA, grants the the designation to both practicing speech-language pathologists and audiologists.
the cell of a sensory receptor responds to a specific energy change in its environment and initiates a corresponding sensory input. adrenergic r's. receptors for epinephrine or norepinephrine, such as those on effector organs innervated by postganglionic adrenergic fibers of the sympathetic nervous system. Classified as Î±-adrenergic receptors, which are stimulated by norepinephrine, and Î²-adrenergic receptors, which are stimulated by epinephrine.
Norepinephrine and epinephrine, both of which are secreted into the blood by the adrenal medulla, have somewhat different effects in exciting the alpha and beta receptors. Norepinephrine excites mainly alpha receptors but excites the beta receptors to a less extent as well.he beta receptors in turn are divided into beta1 and beta 2 receptors because certain drugs affect only some beta receptors. Also, there is a less distinct division of alpha receptors into alpha1 and alpha 2 receptors.