Windows 10: What is the $WINDOWS.~BT folder used for? This folder is used by the Windows 10 Updater, it contains update logs and files downloaded by the Windows update process. How to delete the $WINDOWS.~BT folder? The folder can be deleted e.g. when an upgrade from windows 7 / 8 to Windows 10 failed and you want to free up space on the hard disk.
Two Types of Receptors. There are two types of acetylcholine receptors (AChR) that bind acetylcholine and transmit its signal: muscarinic AChRs and nicotinic AChRs, which are named after the agonists muscarine and nicotine, respectively.
Autonomic receptors are broadly divided into those for ACh (cholinergic receptors) and those for catecholamines such as NE or EPI (adrenergic receptors or adrenoceptors). As we shall see later, subdivisions of each of these families of receptors are based on sensitivity to various agonist and antagonist drugs.holinergic, receptors mediate the actions of acetylcholine (ACh). Other choline esters such as methacholine (MecholylÂ®) or carbamylcholine (CarbacholÂ®) mimic the actions of ACh at the same receptors. Cholinergic receptors are subdivided into: 1  muscarinic.