Inhibits osteoclast activity, inhibits release of CA from bone matrix, stimulates Ca uptake into bone matrix.
What does the Parathyroid Gland Secrete?
(PTH) Parathyroid Hormone.
What is the affect of PTH?
Ca balance of blood.
What is the action of PTH?
Stimulates osteoclasts, enhances reabsorption of Ca and secretion of P by kidneys, increases absorption of Ca by intestinal mucosa.
What does the Adrenal Cortex Layer Glomerulosa Secrete?
Mineralcorticoids - Aldosterone.
What is the affect of Mineralcorticoids?
Electrolytes in the ECF.
What is the action of Mineralcorticoids?
Maintains Na balance (by reducing excretion of Na from body), stimulates reabsorption of Na by the kidneys.
What does the Adrenal Cortex Layer Zona Fasciculata Secrete?
Glucocorticoids - Cortisol.
What is the affect of Glucocortioids?
What is the action of Glucocorticoids?
Helps body resist stress: keeping blood sugar levels constant, maintaining blood volume/preventing water shift into tissue; Cortisol provokes gluconeogenesis (formation of glucose from non carbs), rises in blood glucose/fatty acids/amino acids.
What does Adrenal Cortex Layer Zona Reticularis Secrete?
Gonadocorticoids - Andorgens.
What does Gonadocorticoids affect?
What is the action of Gonadocotricoids?
Contribute to onset of puberty/apperance of secondary sex characteristics; sex drive in males/females.
What does the Adrenal Medulla Secrete?
Epinephrine and Norepinephrine.
What does Epinephrine affect?
Cardiovascular system - heart/metabolic activities.
What is the action of Epinephrine?
Blood glucose levels rise, heart beats faster, blood diverted to brain, heart and skeletal muscles.