Adrenal Glands Flashcards
Where are the adrenals located
Sit on top of each kidney
Describe the structure of the gland
Outer cortex and Inner medulla
The medulla is connected to what
Sympathetic nervous system
Adrenal cortex produces the
Corticosteroids
Name the 5 zones of the adrenal glands starting from the medulla
Medulla, Zona reticularis, Zona fasciculata, Zona giomerulosa, Capsule
Zona reticularis forms what
Gonadocticoids - Sex hormones - testosterone and oestrogen
Zona fasciculata forms what and what does this hormone do
Glucocorticoids - cortisol
Increases metabolism and depresses inflammatory and immune responses
Zona giomerulosa forms what and what does this hormone do
Mineralocorticods - Aldosterone
Increases blood pressure by increasing Na+ reabsorption in the kidney
Name the 3 corticoids hormones
Mineral, Gluco and Gonad
All of the corticosteroids are derived from what
cholesterol
The medulla contains what cell
Chromaffin Cells
Chromaffin cells are actually what
modified nerve endings of sympathetic neurons
Chromaffin cells secrete what
Catecholamines
Name the 2 catecholamines
Epinephrine (adrenaline) and norepinephrine (noradrenaline)
The catecholamines does what 5 things
Increases heart rate, increases blood pressure, increases metabolism, dilate the eye pupils and expand the airways and increase oxygen intake
