,▪ Adrenal glands are Triangle
shaped small organ on the top
of each kidney.
▪ Each gland consist of
▪ outer cortex and
▪ inner medulla
▪ Adrenal cortex is responsible
for producing Corticosteroids.
,▪ Medulla is the inner part of adrenal gland
▪ 20% of the mass of adrenal gland
▪ The medulla is populated with neural crest –derived adrenal chromaffin cells tha
function as the neuroendocrine arm of the sympathetic nervous system.
▪ Upon stimulation, chromaffin cells synthesize and secrete catecholamines
1. Epinephrine (Adrenaline) 80 % Of the secretion
2.Nor-epinephrine (Nor-adrenaline) 20% of the secretion
3.Small amount of dopamine
▪ Catecholamines are stress hormones
▪ Secreted in to blood stream to coordinate the physiologic responses to
environmental, metabolic and emotional /psychologic stressors.
,
shaped small organ on the top
of each kidney.
▪ Each gland consist of
▪ outer cortex and
▪ inner medulla
▪ Adrenal cortex is responsible
for producing Corticosteroids.
,▪ Medulla is the inner part of adrenal gland
▪ 20% of the mass of adrenal gland
▪ The medulla is populated with neural crest –derived adrenal chromaffin cells tha
function as the neuroendocrine arm of the sympathetic nervous system.
▪ Upon stimulation, chromaffin cells synthesize and secrete catecholamines
1. Epinephrine (Adrenaline) 80 % Of the secretion
2.Nor-epinephrine (Nor-adrenaline) 20% of the secretion
3.Small amount of dopamine
▪ Catecholamines are stress hormones
▪ Secreted in to blood stream to coordinate the physiologic responses to
environmental, metabolic and emotional /psychologic stressors.
,
