"A salivary gland is like a cluster of grapes with the "stem" being the duct through which saliva travels into the mouth. The salivary flow is regulated through the autonomic nervous system, most importantly, the parasympathetic division."
METAMIA is a free database of analogy and metaphor. Anyone can contribute or search. The subject matter can be anything. Science is popular, but poetry is encouraged. The goal is to integrate our fluid muses with the stark literalism of a relational database. Metamia is like a girdle for your muses, a cognitive girdle.