Endocrine - Pineal Development

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Introduction

Adult pineal body
Pineal gland position
  • part of epithalmus - neurons, glia and pinealocytes
  • pinealocytes secrete melatonin - cyclic nature of activity, melatonin lowest during daylight
    • inhibit hypothalamic secretion of GnRH until puberty, pineal gland then rapidly regresses.
  • other activities - possibly gamete maturation, antioxidant effect, protect neurons?

Links: Endocrine System Development | Lecture - Endocrine Development | Lecture - Head Development | original page

Pineal Development

  • Neuroectoderm - prosenecephalon then diencephalon
  • caudal roof, median diverticulum, epiphysis
  • Initially a hollow diverticulum, cell proliferation to solid, pinealocytes (neuroglia), cone-shaped gland innervated by epithalamus
    • epithalamus consists of the pineal gland and habenular nuclei


References


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  • Endocrine Development - All (14277) Review (4620) Free Full Text (3140)

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Cite this page: Hill, M.A. (2019, September 17) Embryology Endocrine - Pineal Development. Retrieved from https://embryology.med.unsw.edu.au/embryology/index.php/Endocrine_-_Pineal_Development

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© Dr Mark Hill 2019, UNSW Embryology ISBN: 978 0 7334 2609 4 - UNSW CRICOS Provider Code No. 00098G