Assertion: alkaloid's action | /r/CapableOf | inhibit contraction
Facets:
Source sentences:
text: According to Dr. Bruce G. Livett, Department of Biochemistry & Molecular Biology, The University of Melbourne (personal communication, 2007), cone snails such as Conus geographicus contain omega-conotoxins that block calcium channels; however, it is generally accepted that the cause of death is due to the actions of alpha-conotoxins that block acetylcholine on nicotinic receptors at the neuromuscular junction, therby inhibiting depolarization and contraction of the diaphragm muscle and causing breathing to stop.