ADRENAL MEDULLA Flashcards
Catecholamines (synthesis , function and regulation ) , Physiology of pheochromocytomas
Percentage occupied by adrenal medulla of total adrenal gland
20%
Hormones secreted by A.medulla
Epinephrine
Nor epinephrine
Dopamine
Epinephrine and Nor epinephrine
Are synthesized through
Tyrosine
Normal plasma values of catecholamines are
Epinephrine - 0.2mcg/kg/min
Not epinephrine - 0.05mcg/kg/min
Enzymes used for destruction of catecholamines are
Monamine oxidase
Catechol-O-Transferase
Cells releasing catecholamines are called
Chromaffin cells / Pheochromocytes
Chromaffin cells are activated through which NT
Acetylcholine
Effect of Cmines on liver
Increased glucose release
Effect of Cmines on fat cells
Increased lipolysis
Effect of Cmines on muscle
Increased muscle strength and increased glucose production
Which Cmine is better vasoconstricter
Norepinephrine
Which Cmine is better cardioaccelerator
Epinephrine
Whcih Cmine increases tissue metabolism to a greater extent
Epinephrine