4,503
edits
Changes
Jump to navigation
Jump to search
Lactation - Endocrine Control - Anatomy & Physiology (view source)
Revision as of 11:11, 15 July 2008
, 11:11, 15 July 2008no edit summary
== Mammogenesis ==
* Initial duct growth is stimulated by '''oestrogen''', '''growth hormone''' and '''glucocorticoids'''.
* Initial duct growth is stimulated by '''oestrogen''', '''growth hormone''' and '''glucocorticoids'''.
* '''Prolactin''' and '''progesterone''' are important for lobular alveolar growth.
* '''Prolactin''' and '''progesterone''' are important for lobular alveolar growth.
----
== Lactogenesis and Galactopoesis ==
* Regulated by a '''lactogenic complex''' consisting of mainly prolactin and growth hormone, but also thyroid hormones, corticosteroids and insulin.
* Regulated by a '''lactogenic complex''' consisting of mainly prolactin and growth hormone, but also thyroid hormones, corticosteroids and insulin.
* '''Prolactin''' acts on mammary secretory epithelial cells to stimulate synthesis of milk proteins. It is released during suckling and in response to the rise in oestrogen and glucocorticoids in parturition.
* '''Prolactin''' acts on mammary secretory epithelial cells to stimulate synthesis of milk proteins. It is released during suckling and in response to the rise in oestrogen and glucocorticoids in parturition.
* Depends on the frequency of suckling stimulus to cause release of the lactogenic complex.
* Depends on the frequency of suckling stimulus to cause release of the lactogenic complex.
----
== Milk Ejection Reflex ==
* '''[[Endocrine_System_-_Pituitary_Gland_-_Anatomy_%26_Physiology#Oxytocin|Oxytocin]]''' is synthesised by magnocellar neurones of the '''Paraventricular nucleus (PVN)''' and '''Supraoptic nucleus (SON)''' of the '''[[Endocrine_System_-_Hypothalamus_-_Anatomy_%26_Physiology#Hypothalamus|Hypothalamus]] '''.
* '''[[Endocrine_System_-_Pituitary_Gland_-_Anatomy_%26_Physiology#Oxytocin|Oxytocin]]''' is synthesised by magnocellar neurones of the '''Paraventricular nucleus (PVN)''' and '''Supraoptic nucleus (SON)''' of the '''[[Endocrine_System_-_Hypothalamus_-_Anatomy_%26_Physiology#Hypothalamus|Hypothalamus]] '''.
* Oxytocin is secreted from the '''[[Endocrine_System_-_Pituitary_Gland_-_Anatomy_%26_Physiology#Posterior_Pituitary_Gland|Posterior Pituitary Gland]]'''.
* Oxytocin is secreted from the '''[[Endocrine_System_-_Pituitary_Gland_-_Anatomy_%26_Physiology#Posterior_Pituitary_Gland|Posterior Pituitary Gland]]'''.