In humans, the products of anaerobic respiration are adenosine triphosphate (ATP), carbon dioxide and lactic acid. ATP is the molecule that provides energy to cells.
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.he muscarinic AChRs occur primarily in the CNS, and are part of a large family of G-protein-coupled receptors (G proteins), which use an intracellular secondary messenger system involving an increase of intracellular calcium to transmit signals inside cells.
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.