Antidiuretic Hormone (ADH) Flashcards
Decreased amount of…
Urine
What happens if too little water is taken in orally?
The hypothalamus releases a hormone into the nerve track to the posterior pituitary gland
Water and urea=
Urine
If pH is too low, what happens?
Hydrogen ions are secreted into the nephron
What is urea?
Urea Is a waste product in the metabolism of proteins
How does alcohol negatively affect ADH?
It sends a false message to the hypothalamus that there’s too much water in the blood. ADH is not released, it is inhibited
How is pH of blood maintained?
By the tubular excretion
Causes Increase in
Urine concentration
What has a negative effect on ADH?
Alcohol
Anti-diuretic hormone is a good example of
Negative Feedback loop
What does A.D.H control?
Reabsorption of water
How does ADH work?
Increases the permeability of the distal convoluted tubule and collecting duct so that more water can be reabsorbed
Why is it that when you drink alcohol you urinate a lot and become dehydrated?
Water is not reabsorbed and is lost in the urine
With more water being absorbed, blood volume…
Tends to be increased
The posterior pituitary gland releases…
ADH, and more water is absorbed by the kidneys to maintain blood volume
