Alexander SP, Christopoulos A, Davenport AP, Kelly E, Marrion NV, Peters JA, Faccenda E, Harding SD, Pawson AJ, Sharman JL, Southan C (2017) The Concise Guide to Pharmacology 2017/18: G protein?coupled receptors. British Journal of Pharmacoogy 174: S17-S129.

Apu AS, Mondal A, Kitazawa T, Takemi S, Sakai T,  Sakata I (2016) Molecular cloning of motilin and mechanism of motilin-induced gastrointestinal motility in Japanese quail. General and Comparative Endocrinology 233: 53-62.

Bonner TI, Buckley NJ, Young AC,  Brann MR (1987) Identification of a family of muscarinic acetylcholine receptor genes. Science 237: 527-532.

Dale HH (1914) The action of certain esters and ethers of choline, and their relation to muscarine. Journal of Pharmacology and Experimental Therapeutics 6: 147-190.

Darroch S, Irving HR, Mitchelson FJ (2000) Characterisation of muscarinic receptor subtypes in avian smooth muscle. European Journal of Pharmacology 402: 161-169.

Delvalle NM, Fried DE, Rivera-Lopez G, Gaudette L, Gulbransen BD (2018) Cholinergic activation of enteric glia is a physiological mechanism that contributes to the regulation of gastrointestinal motility. American Journal of Physiology- Gastrointestinal and Liver Physiology 315: G473-G483.

Eglen RM,  Whiting RL (1988) Comparison of the muscarinic receptors of the guinea-pig oesophageal muscularis mucosae and trachea in vitro. Journal of Autonomic Pharmacology 8:181-189.

Gholamnezhad Z, Ghorani V, Saadat S, Shakeri F, Boskabady MH (2018) The effects of medicinal plants on muscarinic receptors in various types of smooth muscle. Phytotherapy Research 32: 2340-2363.

Ghosh MN (2014) Fundamentals of Experimental Pharmacology 6^th Ed, Hilton and Co, P 142-143.

Kamikawa Y, Uchida K, Shimo Y(1985) Heterogeneity of muscarinic receptors in the guinea pig esophageal muscularis mucosae and ileal longitudinal muscle. Gastroenterology    88: 706-716.

Kitazawa T, Kondo N, Taneike T (2016) Pharmacological Characterization of muscarinic receptor subtypes involved in carbachol-induced contraction of the chicken proventriculus. Gastroenterology and Hepatology  2: 1003-1.

Loewi O (1921) Überhumoraleübertragbarkeit der Herznervenwirkung. PflügersArchiv European  Journal of Physiology 189: 239-242.

Paradelis AG (1981) Aminoglycoside antibiotics and inhibition of the pendular movements of the intestine. Journal of Antimicrobial Chemotherapy 7: 109-110.

VanPatten S, Al-Abed Y (2017) The challenges of modulating the ‘rest and digest’ system: acetylcholine receptors as drug targets. Drug Discovery Today 22: 97–104.