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Title: Pituitary Gland Anatomy
Description: Notes aimed for Pre-Meds, Nursing, and 1st Year Med students to give an introduction and basics to the Pituitary gland.
Description: Notes aimed for Pre-Meds, Nursing, and 1st Year Med students to give an introduction and basics to the Pituitary gland.
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PITUITARY GLAND ANATOMY
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The posterior lobe is more nervous system related while anterior lobe is more blood related
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Protected by: Sella turcica below hypothalamus surrounded by clinoid process
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Posteriorly: mammalian bodies
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How is neurohypophysis is connected to hypothalamus? By hypothalamo-hypophyseal tract
through infundibulum
...
Relationship with posterior pituitary
“Stores and releases hormone secrete by hypothalamus”
-
Connected to hypothalamus via “unmyelinated” nerve fibers
Synthesized hormone in hypothalamus → Flow of neuron’s nerve → post pituitary
Superior relations: diaphragm sella, covering of dura mater with opening for infundibulum
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Lateral relation and contents: Cavernous sinus and in the floor there is Abducens nerve and
Internal Carotid Artery
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3 parts of anterior lobe: Pars distalis-biggest part, Pars tuberalis-cranial part of infundibulum,
Pars intermediate- between 2 lobes
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Blood supply: BY superior and inferior hypophyseal Artery, arises from ICA
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Inferior artery supplies: posterior lobe
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Pars anterior→ hormone manufacturing
Pars nervosa → No manufacturing of hormone -storage and release
Pars intermedia → Colloid filled cyst
Glandular cells of adenohypophysis
1
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Basophil - secrete TSH,LH, FSH, ACTH
3
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GnRH, Thyroid stimulating hormone, Adrenocorticotropic hormone,
Prolactin
PP: Antidiuretic hormone and Oxytocin
Title: Pituitary Gland Anatomy
Description: Notes aimed for Pre-Meds, Nursing, and 1st Year Med students to give an introduction and basics to the Pituitary gland.
Description: Notes aimed for Pre-Meds, Nursing, and 1st Year Med students to give an introduction and basics to the Pituitary gland.