Hypothalamus Flashcards
endocrine tissue – inside
secretes hormones directly into the blood
hormones
chemical messengers that circulate to target cells in other glands or tissues & after acting on specific receptors on or in target cells, the hormones are inactivated by the target tissuess or the liver & excreted by the kidney
hormone release is controlled by
negative feedback
exocrine tissue – outside
secretes across an epithelium
two systems that work together to regulate metabolic activities
endocrine and NS
endocrine dxs present as
hyper/hypofunction or tumours
hypothalamus fxn
regulates secretion of both the anterior and posterior pituitary hormones through various hormones that have releasing or inhibiting functions
hypothal: releasing hormones
- corticotropin-releasing hormone (CRH)
- thyrotropin-releasing hormone (TRH)
- growth hormone relasing factor or somatotropin-releasing hormone (GnRH)
- prolactin-releasing hormone
hypothal: CRH means
corticotropin releasing hormone
hypothal: CRH fxn
involved in stress response/drives stress response
hypothal: TRH means
thyrotropin releasing hormone
hypothal: TRH fxn
stimulates the release of TSH and prolactin from the anterior pituitary
hypthal: GnHR means
gonadotropin releasing hormone
hypothal: GnHR fxn
responsible for the release of follicle-stimulating hormone (FSH) and luteinizing hormone (LH) from the anterior pituitary
hypothal: inhibiting hormones
somatostatin & prolactin inhibiting hormone
