The gland that produces the largest number of different hormones and has the widest range of effects on the body's functions is the

Acetylcholine Distributed throughout central nervous system. Involved in arousal, attention, memory, motivation, and movement. Involved in muscle action through presence at neuromuscular junctions. Degeneration of neurons that produce Ache is linked to Alzheimer's disease. Too much ACh - spasms, tremors, too little - paralysis or torpor.