One of the two major pharmacological subdivisions of adrenergic receptors that were originally defined by the relative potencies of various adrenergic compounds. The alpha receptors were initially described as excitatory receptors that post-junctionally stimulate SMOOTH MUSCLE contraction. However, further analysis has revealed a more complex picture involving several alpha receptor subtypes and their involvement in feedback regulation.

Descriptor ID	D011942
MeSH Number(s)	D12.776.543.750.069.300.300.300 D12.776.543.750.100.150.300.300 D12.776.543.750.720.330.300.300
Concept/Terms	Receptors, Adrenergic, alpha Receptors, Adrenergic, alpha Receptor, Adrenergic, alpha alpha-Adrenergic Receptors alpha Adrenergic Receptors Receptors, alpha-Adrenergic Receptors, alpha Adrenergic Adrenergic alpha-Receptors Adrenergic alpha Receptors alpha-Receptors, Adrenergic

Below are MeSH descriptors whose meaning is more general than "Receptors, Adrenergic, alpha".

Below are MeSH descriptors whose meaning is related to "Receptors, Adrenergic, alpha".

Below are MeSH descriptors whose meaning is more specific than "Receptors, Adrenergic, alpha".