Regulation of Secretion and Actions of Antidiuretic Hormone Process Diagrams Step-by-Step Copyright...

Regulation of Secretion and Actions of Antidiuretic

Hormone

Process Diagrams Step-by-Step

Copyright © 2007 by John Wiley & Sons, Inc.

Osmoreceptors

High blood osmoticpressure stimulateshypothalamicosmoreceptors

1

Osmoreceptors


Osmoreceptorsactivate theneurosecretory cellsthat synthesize andrelease ADH

Hypothalamus

1

2

Osmoreceptors


Nerve impulsesliberate ADH fromaxon terminals inthe posteriorpituitary intothe bloodstream


Hypothalamus

ADH

1

2

3

Osmoreceptors




Hypothalamus

Sudoriferous(sweat) glandsdecrease waterloss by perspirationfrom the skin

Arterioles constrict,which increasesblood pressure

Kidneys retainmore water,which decreasesurine output

ADH

Target tissues

1

2

3

4

Osmoreceptors


Low blood osmoticpressure inhibitshypothalamicosmoreceptors



Hypothalamus




ADH

Target tissues

1

2

3

4

5

Osmoreceptors


Low blood osmoticpressure inhibitshypothalamicosmoreceptors



Hypothalamus

Inhibition of osmo-receptors reduces orstops ADH secretion




ADH

Target tissues

1

2

3

4

5

6

Regulation of Secretion and Actions of Antidiuretic Hormone Process Diagrams Step-by-Step Copyright...

Documents

Transcript of Regulation of Secretion and Actions of Antidiuretic Hormone Process Diagrams Step-by-Step Copyright...