Endocrine Flashcards
Glands of endocrine system
Pituitary
Thyroid
Parathyroid
Adrenal glands
What does ADH do?
Regulate water and electrolytes by holding onto sodium
Paracrine
Hormone produces action locally on other cells
Autocrine
Produces action on the cells from which they were produced
How is the hypothalamus activity regulated?
Through the negative feedback system
How to get T3 and T4
Hypothalamus—TRH—pituitary—TSH— acts on thyroid gland—T3 and T4
What is the master gland?
Pituitary gland
Hypofuncfion
Congenital defect on gland/enzyme
Gland destroyed and caused inflammation, infection, autoimmune response
Receptor defect
Hyper function
Excessive hormone production
Excess stimulation
Hyperplasia
Primary disorder
Originate in the target gland for producing the hormone
Secondary disorder
Target gland function is normal but altered by defective levels of stimulating or releasing hormones from pituitary gland
Tertiary disorder
Results from hypothalamic dysfunction- both pituitary and target glands are under stimulated
Hyperpituitarism cause
Typically pituitary adenoma
Adenoma
Benign tumor from anterior pituitary
Hypopituitarism
Decreased secretion of pituitary hormones causing hypofunctiom
Idiopathic short stature
Normal variant of short statue with unknown cause
Psychosocial dwarfism
Functional hypopituitarism
Seen in emotionally deprived children
Poor eating, drinking habits
Potbelly
Classic GH deficiency
Normal intelligence, short stature, obesity with premature facial features, puberty often delayed
Treatment: human GH