Beta-adrenergic Receptor (Noun)
Meaning
Receptors postulated to exist on nerve cell membranes of the sympathetic nervous system in order to explain the specificity of certain agents that affect only some sympathetic activities (such as vasodilation and increased heart beat).
Classification
Nouns denoting body parts.
Examples
- The beta-adrenergic receptor is a protein complex located in the cell membrane that plays a crucial role in transmitting signals from the sympathetic nervous system to various tissues and organs.
- Stimulation of the beta-adrenergic receptor activates a signaling cascade that ultimately leads to the relaxation of smooth muscle cells, resulting in vasodilation and increased blood flow.
- Beta-adrenergic receptors are also involved in regulating the heart rate, with activation leading to an increase in heart rate and contractility.
- Recent studies have identified several subtypes of beta-adrenergic receptors, including beta-1, beta-2, and beta-3, each with distinct tissue distributions and functions.
- Drugs that selectively target the beta-adrenergic receptor, such as beta blockers and agonists, are used to treat various cardiovascular and respiratory disorders, including hypertension and asthma.