Dictionary
Words, grammatical forms and meanings linked to the ontology.
X organ en · NOUN
Meanings
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A cluster of neurosecretory cells located in the eyestalks of crustaceans; it acts as a primary endocrine center that synthesizes and releases hormones regulating functions like molting and growth.
In crustaceans, endocrine functions are closely tied to nervous functions. Nervous tissues that produce and release hormones are called neurosecretory tissues. X-organs are neurosecretory tissues in the eyestalks of crayfish. Associated with each X-organ is a sinus gland that accumulates and releases the secretions of the X-organ. [...] Both the X-organ and the Y-organ control ecdysis. The X-organ produces molt-inhibiting hormone, and the sinus gland releases it.
2001, Miller-Harley, Zoology Fifth Edition:
Forms