Endocrine - Pituitary Development
Introduction
Anterior pituitary hormones - Thyroid-stimulating hormone (TSH), Adrenocorticotrophic hormone (ACTH), Luteinizing hormone (LH), Follicle-stimulating hormone (FSH), Somatotrophin/growth hormone (GH), Prolactin (PRL), Melanocyte-stimulating hormone (MSH)
Posterior pituitary hormones - Oxytocin, Arginine vasopressin
Links: Endocrine System Development | Lecture - Endocrine Development | Lecture - Head Development | original page
Pituitary Development
- Dual ectoderm origins
- Ectoderm - ectoderm roof of stomodeum, Rathke's pouch, adenohypophysis
- Neuroectoderm - prosenecephalon then diencephalon, neurohypophysis
Adenohypophysis
- Anterior wall proliferates - pars distalis
- Posterior wall little growth – pars intermedia
- Rostral growth around infundibular stem – pars tuberalis
Neurohypophysis
- Infundibulum – median eminence, infundibulum, pars nervosa
Pituitary Timeline
- Week 4 - hypophysial pouch, Rathke’s pouch, diverticulum from roof
- Week 5 - elongation, contacts infundibulum, diverticulum of diencephalon
- Week 6 - connecting stalk between pouch and oral cavity degenerates
- Week 10 - growth hormone and ACTH detectable
- Week 16 - adenohypophysis fully differentiated
- Week 20 to 24 - growth hormone levels peak, then decline
References
Reviews
Articles
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Search April 2010
- Endocrine Development - All (14277) Review (4620) Free Full Text (3140)
Search Pubmed: pituitary development
Additional Images
Adult Histology
Pituitary - adenohypophysis
Pituitary - adenohypophysis
Pituitary - neurohypophysis
Terms
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Cite this page: Hill, M.A. (2024, May 3) Embryology Endocrine - Pituitary Development. Retrieved from https://embryology.med.unsw.edu.au/embryology/index.php/Endocrine_-_Pituitary_Development
- © Dr Mark Hill 2024, UNSW Embryology ISBN: 978 0 7334 2609 4 - UNSW CRICOS Provider Code No. 00098G
