Adh Flashcards
What does ADH stand for?
Antidiuretic Hormone
Where is ADH produced?
In the hypothalamus
What is the primary function of ADH?
To regulate water balance in the body
Which part of the kidney does ADH primarily affect?
The collecting duct
True or False: ADH increases water reabsorption in the collecting duct.
True
What triggers the release of ADH?
Increased blood osmolality or decreased blood volume
Fill in the blank: ADH promotes the insertion of ________ channels in the collecting duct.
aquaporin
What is the effect of ADH on urine concentration?
It increases urine concentration.
How does ADH affect urine volume?
It decreases urine volume.
Name the receptors that ADH binds to in the collecting duct.
V2 receptors
True or False: ADH has no effect on the permeability of the collecting duct.
False
What happens to the collecting duct in the absence of ADH?
It remains impermeable to water.
Multiple Choice: Which of the following is a result of ADH action? A) Increased urine output B) Decreased urine output C) No change in urine output
B) Decreased urine output
What condition results from excessive ADH secretion?
Syndrome of Inappropriate Antidiuretic Hormone secretion (SIADH)
How does dehydration affect ADH levels?
Dehydration increases ADH levels.
What is the role of aquaporins in the collecting duct?
They facilitate water reabsorption.
Fill in the blank: ADH is also known as ________.
vasopressin
True or False: ADH decreases blood pressure.
False
What effect does ADH have on blood volume?
It increases blood volume.
Which organ’s function is primarily influenced by ADH?
Kidney
What physiological response occurs when blood osmolality decreases?
ADH secretion decreases.
Multiple Choice: Which of the following stimulates ADH release? A) Low blood osmolality B) High blood osmolality C) High blood pressure
B) High blood osmolality
How does ADH affect blood osmolality?
It decreases blood osmolality.
What is the primary site of action for ADH in the nephron?
Collecting duct
