Flashcards in Hormonal Sectretion Deck (21):
Name 6 of the endocrine glands?
Isles of langerhans
Where is erythropoietin made and what’s its purpose?
Made in kidney, increases rbc
What hormone does the heart produce? And what’s its purpose
Atrial natreric peptide, increases na2 secreted by kidney
Where is Von Willie brand factor made and what does it do?
Vascular endothelium and used for blood clotting
What are the ways hormones can be delivered around body?
What type of hormones are produced by hypothalamus
What are the 3 types of hormones
What are the 2 main types of amines?
Thyroid- behave like steroids
Catecholamines- adrenaline, noradrenaline act like protein hormones
Hat can tyrosine be made into?
What is dimerisation? And where does it occur
Steroid hormone receptors
2 receptor bits get together, attach onto coding part of dna, change dna replication ... producing an affect
What’s the origin of the posterior pituitary
Invagination of forebrain- neuronal
What’s the origin of the anterior pituitary
Outgrowth of buccaneer cavity, Rathske pouch- glandular
What’s an infudibulum?
Stalk that joins the 2 pituitary
How does the posterior pituitary work?
Has Loads of axons, hormone stored in nerve ending, ending of it reaches the pituitary vein where its released into the blood
What are the 2 main nucleus’s in the posterior pituitary and what do they produce?
Paraventricularr- oxytocin and adh
How does the anterior pituitary work?
No neaural connection, hormone released by hypothalamus and travels to anterior via blood vessels, once inside, travels down portal blood vessels- dense network of capillaries
What are the 2 main arteries of the pituitary portal blood system
Superior and inferior hypophseal
What’s the accumulation of hormones in axon
What are pituicytes
Glial like cells in posterior
Somatostatin has a negative feedback affect on what 2 cells
Somatotroph and thyrotroph