"The maintenance of membrane composition in a postsynaptic membrane, the specialized area of membrane facing the presynaptic membrane on the tip of the nerve ending and separated from it by a minute cleft (the synaptic cleft) [goid 1941] [pmid 8651643] [evidence IMP]; The directed movement of cations, atoms or small molecules with a net positive charge, into, out of, within or between cells [goid 6812] [pmid 8872460] [evidence IMP]; A process whereby force is generated within muscle tissue, resulting in a change in muscle geometry. Force generation involves a chemo-mechanical energy conversion step. The chemo-mechanical energy conversion step is carried out by the actin/myosin complex activity, which generates force through ATP hydrolysis [goid 6936] [pmid 8651643] [evidence IMP]; The cascade of processes by which a signal interacts with a receptor, causing a change in the level or activity of a second messenger or other downstream target, and ultimately effecting a change in the functioning of the cell [goid 7165] [pmid 8872460] [evidence IMP]; The process of communication from a neuron to another neuron across a synapse using the neurotransmitter acetylcholine [goid 7271] [pmid 8872460] [evidence IMP]; The process of communication from a neuron to a muscle, across a synapse [goid 7274] [pmid 8651643] [evidence IMP]; A change in the behavior of an organism as a result of a nicotine stimulus [goid 35095] [pmid 16874522] [evidence IMP]; Any process that modulates the establishment or extent of a membrane potential, the electric potential existing across any membrane arising from charges in the membrane itself and from the charges present in the media on either side of the membrane [goid 42391] [evidence ISS]; The process whose specific outcome is the progression of the muscle fiber over time, from its formation to the mature structure. Muscle fibres are formed by the maturation of myotubes. They can be classed as slow, intermediate/fast or fast [goid 48747] [pmid 8651643] [evidence IMP]; A organ system process carried out by any of the organs or tissues of neurological system [goid 50877] [pmid 11104662] [evidence IMP]"