1) The document discusses two antagonistic hormones: antidiuretic hormone (ADH) and atrial natriuretic peptide (ANP). 2) ADH promotes water reabsorption in the kidneys, reducing urine output, while ANP promotes water excretion, increasing urine output. 3) The hormones have opposite effects on sodium levels, water retention, and the renin-angiotensin-aldosterone system in the body.

1. Supervised by:
Prepared by:
Radwan Rushdi | Zryan Rostam | Rawand Dler | Abdullah Yasin | Rebwar Adil
Mr. Hardi Rafat
Hormonal antagonist: Antidiuretic
Hormone (ADH) and Atrial Natriuretic
Peptide (ANP)

2. Word of the day
Antagonistic Hormones
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3. Word of the day
Antagonistic Hormones
Meaning: Hormones having opposite actions on
the body
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4. Antidiuretic Hormone
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5. Antidiuretic Hormone
Does not Release water
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6. Antidiuretic Hormone
Does not Release water
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7. Antidiuretic Hormone
Does not Release water
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8. 8

9. STIMULUS
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15. Atrial Natriuretic Peptide
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21. Levels
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22. ADH
Syndrome of
Inappropriate
Antidiuretic
Hormone
Secretion
(SIADH(
Insipidus (DI(
Alcohol
consumption
ANP
ADH
Diuresis
Vasodilation
Inhibition of
aldosterone
secretion
ANP
Heart failure
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23. ADH vs ANP
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24. Function
Promotes water reabsorption
by the kidneys
Promotes water
excretion by the kidneys
Action
Acts on the kidneys to
increase the permeability of
the collecting ducts to water
Acts on the kidneys to
increase the excretion of
sodium ions
Effects on the
Body
Different effects… Different effects…
Renin
Angiotensin
Aldosterone
System (RAAS)
Increases the activity of RAAS
Decreases the activity of
RAAS
ADH ANP
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25. Urine Osmolality
Urine Electrolytes
Liver Function
Tests
Serum Uric Acid
Thyroid Function
Tests
NP Test
Serum Osmolality
Cortisol Levels
Diagnosing
ADH & ANP
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