Adrenal glands Flashcards

1
Q

What are adrenals surrounded by

A

greets fascia

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2
Q

What structures are contained in the retroperitoneum

A

Kidney
ureters
adrenals
rectum
aorta

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3
Q

Where do the adrenals get blood supply from

A

Suprarenal and phrenic artery

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4
Q

What does the left venous system attach to

A

Renal vein

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5
Q

What does the right side venous system attach to

A

IVC

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6
Q

What innervates the adrenal glands

A

Celiac plexus and splanchnic nerve

*come off lateral spinal horn

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7
Q

What does the medulla secrete

A

Catecholamines

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8
Q

What does the adrenal cortex secrete

A

Aldosterone
cortisol
androgens

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9
Q

What is the primary driver of aldosterone

A

RAAS

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10
Q

What are the layers of the adrenal cortex

A

Zona glomerulosa
Zona fasciculata
Zona reticularis

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11
Q

What is cortisol important for

A

suppress inflammation and regulate glucose

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12
Q

What do mineral corticoids effect

A

Electrolytes

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13
Q

How does ACTH effect LDL

A

It up regulates the intake of LDL and breakdown into usable cholesterol

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14
Q

Where is cholesterol broken down

A

liver

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15
Q

What causes aldosterone to be secreted

A

Angiotensin 2

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16
Q

What is the most potent mineralocorticoid

A

aldosterone

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17
Q

How fast would someone die without any mineralocorticoids

A

3-14 days

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18
Q

What is refractory HTN

A

Unable to control HTN with 3+ meds

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19
Q

What is responsible for inhibiting RAAS when blood pressure is too high

A

Atrial natriuretic peptide

20
Q

What is the most potent steroid hormone

A

Glucocorticoids

21
Q

How do glucocorticoids effect carbohydrate metabolism

A

Inhibits insulin acting on the liver

reduces overall insulin sensitivity

Overall it increases glucose levels

22
Q

How do glucocorticoids help with inflammation

A

they block the release of the inflammatory markers

if inflammation has already started = reduction in effects and increase healing

decrease capillary permeability

23
Q

How do glucocorticoids effect fat metabolism

A

it mobilizes our fat for energy and ends up having fat deposits in the face and torso

24
Q

what is the most potent glucocorticoid in the body

25
What does cortisol do
during stress it increases BP and CO, increases lypolysis in extremities, lipogenesis of trunk/face and atrophy of lymphoid tissue (immunosuppression)
26
What does DHEA stimulate
testosterone in men
27
What is DHEA important for
development of male sex organs and sexual characteristics
28
When are catecholamines released
In response to stress
29
what is psychologic stress driven by
limbic system
30
What is cushings syndrome
excess cortisol levels and clinical presentation of this
31
What is Cushing disease
excess ACTH leading to hypercortisolism
32
What are the causes of cushings syndrome
pituitary adenoma hypothalamic dysfunction paraneoplastic syndrome
33
What causes Cushing like syndrome
we did it! steroids
34
What occurs when there are increased androgens associated with increased ACTH stimulation
increased acne hirsutism
35
What is Addisons disease
adrenal insufficiency
36
How can invasion of extra pulmonary TB effect the adrenals
Cause Addisons disease
37
What are some effects of mineralocorticoid deficiency
Hyperkalemia hyponatremia
38
What occurs with glucocorticoid deficiency
Person will not respond appropriately to stress
39
How does Addisons disease effect the skin
will cause an increase in melanin secretion
40
What is Addisonian crisis
pt. w/ Addisons have increased metabolic demand during disease/stress
41
What is occurring in the body with Adrenal crisis
body is not able to compensate for demands *need for glucocorticoid increases
42
What will occur with hypoaldosteronism
pt. will become hypovolemic, hyponatremia, and hyperkalemic
43
What is Conn's syndrome
primary hyperaldosteronism and is associated with zone glomerulosa tumor
44
How will hyperaldosteronism present
hypertension hypokalemia
45
What is a pheochromocytoma
Tumor of chromatin cells of the adrenal medulla = increased catecholamine secretion
46
What is the genetic predisposition for pheochromocytoma
MEN 2
47
What is the presentation triad with a pheochromocytoma
Headache sweating tachycardia