Too Much of a Good Thing. The vitamin A content in beef liver is very high, with 100 grams of raw liver containing over three times the recommended daily value. As a fat-soluble vitamin, vitamin A accumulates in your own liver and can cause serious health issues at high levels.
Acetylcholine is released when a nerve impulse reaches a myoneural junction. It diffuses across the synaptic cleft and binds to cholinergic receptors on the muscle fibers, causing them to contract. cholinesterase splits acetylcholine into its components, thus stopping stimulation of the muscle fibers.
preganglionic parasympathetic fibers release acetylcholine as neurotransmitter, the acetylcholine binds to cholinergic receptors on the cell bodies of the postganglionic parasympathetic fibers (nicotinic subtype) (N2 or Nn)