In the attached video you can find all the relevant information regarding the basic differences between nicotinic and muscarinic receptors, their mechanisms and locations. Timeline: 0:00 - Overview of types of nicotinic receptors and SANS and PANS 2:32 - Types of nerve fibers, actions of Ach on different receptors and basic pharmacology overview 5:37 - Mechanism of nicotinic and muscarinic receptors 9:25 - Muscarinic receptor locations and functional associations 12:53 - Nicotinic receptors and neuromuscular blockers 14:07 - Muscarinic and nicotinic agonists and antagonists 15:28 - Neuromuscular blockade drugs