corpus cardiacum
corpus cardiacum (pl. corpora cardiaca) Either of a pair of long slender neurohaemal organs that lie immediately behind the brain in insects. They contain the endings of neurosecretory cells originating from the brain and also their own neurosecretory cells, in which hormones (e.g. eclosion hormone) are stored for release into the adjacent blood-filled spaces.
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corpus cardiacum