Adrenal Physiology Flashcards Preview

2MB Endocrinology > Adrenal Physiology > Flashcards

Flashcards in Adrenal Physiology Deck (18)
Loading flashcards...
1

List the parts of the adrenal gland

Outer Capsule
Cortex
Medulla

2

What are the 3 zones located in the adrenal cortex?

Zona glomerulosa
Zona fasciculata
Zona reticularis

3

Which cells are located in the adrenal medulla?

Chromaffin cells

4

What controls hormonal release in the zona glomerulosa?

RAAS (angiotensin II)

5

Which hormone is secreted from the zona glomerulosa?

Aldosterone

6

What controls hormonal release in the zona fasciculata?

ACTH

7

What hormones are secreted from the zona fasciculata?

Cortisol
Corticosterone

8

What controls hormonal release in the zona reticularis?

ACTH

9

What hormones are secreted from the zona reticularis?

Androgens (sex hormones)

10

What controls hormonal release in the adrenal medulla?

Sympathetic nervous system

11

What hormones are secreted from the adrenal medulla?

Catecholamines (adrenaline, noradrenaline)

12

Outline the hypothalamus-pituitary-adrenal cortex axis

HYPOTHALAMUS secretes CRH which stimulates anterior PITUITARY to secrete ACTH which stimulates the ADRENAL GLAND to secrete cortisol

13

Which parts of the H-P-adrenal cortex axis does cortisol inhibit in negative feedback?

Hypothalamus
Anterior pituitary

14

Which system regulates aldosterone release?

RAAS

15

What is the effect of cortisol upon the CNS?

Varying mood
Psychosis
Loss of libido

16

What is the effect of cortisol upon bone?

Osteoporosis

17

What is the effect of cortisol upon metabolism?

Increases breakdown of carb, lipid and protein

18

What are the main effects of aldosterone?

Increased K + H ion excretion
Sodium retention