Adrenal glands Flashcards
What are adrenals surrounded by
greets fascia
What structures are contained in the retroperitoneum
Kidney
ureters
adrenals
rectum
aorta
Where do the adrenals get blood supply from
Suprarenal and phrenic artery
What does the left venous system attach to
Renal vein
What does the right side venous system attach to
IVC
What innervates the adrenal glands
Celiac plexus and splanchnic nerve
*come off lateral spinal horn
What does the medulla secrete
Catecholamines
What does the adrenal cortex secrete
Aldosterone
cortisol
androgens
What is the primary driver of aldosterone
RAAS
What are the layers of the adrenal cortex
Zona glomerulosa
Zona fasciculata
Zona reticularis
What is cortisol important for
suppress inflammation and regulate glucose
What do mineral corticoids effect
Electrolytes
How does ACTH effect LDL
It up regulates the intake of LDL and breakdown into usable cholesterol
Where is cholesterol broken down
liver
What causes aldosterone to be secreted
Angiotensin 2
What is the most potent mineralocorticoid
aldosterone
How fast would someone die without any mineralocorticoids
3-14 days
What is refractory HTN
Unable to control HTN with 3+ meds
What is responsible for inhibiting RAAS when blood pressure is too high
Atrial natriuretic peptide
What is the most potent steroid hormone
Glucocorticoids
How do glucocorticoids effect carbohydrate metabolism
Inhibits insulin acting on the liver
reduces overall insulin sensitivity
Overall it increases glucose levels
How do glucocorticoids help with inflammation
they block the release of the inflammatory markers
if inflammation has already started = reduction in effects and increase healing
decrease capillary permeability
How do glucocorticoids effect fat metabolism
it mobilizes our fat for energy and ends up having fat deposits in the face and torso
what is the most potent glucocorticoid in the body
cortisol