"my thyroid gland is like a hibernating sloth"
"Apparently my thyroid gland is like a Jane Austen heroine: it's tiny, sensitive and doesn't work"
"A normal thyroid gland produces about 80 percent T4 and 20 percent T3. However, T3 possesses about four times the hormonal strength. Both hormones are then secreted into the blood, causing the levels of TSH to fall. In this way, the thyroid gland is like a furnace and the pituitary gland is like a thermostat. The levels of TSH and T3/T4 are always in balance."
"Well, the parathyroid gland is like a 24 hour calcium monitor, when the gland detects that blood calcium levels have dropped under a certain amount, they produce PTH."
A thermostat is sensitive to and responds to the temperature in a room. This gland is sensitive to the level of calcium in the blood and will respond to fluctuation in this ion.
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.