PITUITARY GLAND HYPOPHYSIS CEREBRI BY DR SHIVRAM BHAT
PITUITARY GLAND (HYPOPHYSIS CEREBRI ) BY DR SHIVRAM BHAT
LOCATION
LOCATION
Sella turcica, Pituitary fossa
Diaphragma sellae
MEASUREMENTS • Size 8 mm X 12 mm. • Weight 500 mg.
RELATIONS
RELATIONS
RELATIONS
PARTS
PARTS
HISTOLOGY
HISTOLOGY
HISTOLOGY
PITUITARY CELLS & HORMONES Pars anterior Pars posterior • Acidophils – • Vasopressin ( SON) Somatotrophin, • Oxytocin (PVN) Prolactin. • Basophils – Adrenocorticotrophin, Thyrotrophin, Gonadotrophin. Pars intermedia melanocyte stim. horm.
• • PITUITARY HORMONES The Anterior Lobe Thyroid Stimulating Hormone (TSH) Gonadotropins – Follicle Stimulating Hormone (FSH) • • – Luteinizing Hormone (LH) • • LH in females LH in males Prolactin (PRL) Growth Hormone (GH) – • • • FSH in females FSH in males Hormone-replacement therapy ACTH Alpha Melanocyte-Stimulating Hormone (α-MSH) The Posterior Lobe Vasopressin Oxytocin
ARTERIAL SUPPLY • Internal carotid artery – superior and inferior hypophyseal arteries ( 2+ 2) • Anterior cerebral arteries.
VENOUS DRAINAGE • Cavernous sinus. • Intercavernous sinuses. • Hypothalamus.
BLOOD SUPPLY
FUNCTIONAL CONNECTIONS • HYPOTHALAMO HYPOPHYSEAL TRACT. • HYPOTHALAMOHYPOPHYSEAL PORTAL SYSTEM.
DEVELOPMENT • Floor of diencephalon. • Rathke’s pouch of stomotodeum.
DEVELOPMENT
APPLIED ANATOMY • Adenoma ( chromophobes ). • Craniopharyngeoma. • Pharyngeal hypophysis.
PITUITARY ADENOMA
PITUITARY ADENOMA
QUESTIONS • SHORT ESSAYS – 1) Pituitary gland. 2) Blood supply of Pituitary gland. 3) Histology of Pituitary gland.
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