Regulation of Blood Volume and Pressure Flashcards
If – is present, more water will be reabsorbed in the distal convoluted tubule and collecting duct
antidiuretic hormone (ADH)
ADH increases the – of urine and decreases urine volume
concentration
If – is present, more salt will be reabsorbed from the distal convoluted tubule and collecting ducts
aldosterone
water will follow the movement of salt by –
osmosis
Aldosterone causes an increased concentration of – and a decreases in urine volume
filtrate
T/F: Both ADH and aldosterone have the same effects on filtrate concentration
true
By increasing water reabsorption, – is increased
blood volume
the increase in blood volume is one way to increase –
blood pressure
the secretion of ADH and aldosterone is regulated by – produced by the kidneys
renin
Renin secretion is triggered by – in the afferent arterioles
low blood pressure
Renin converts a protein made by the – called angiotensin I to angiotensin II
liver
Angiotensin II triggers the release of ADH by the –
pituitary gland
Angiotensin II triggers the release of aldosterone by the –
adrenal cortex
– is secreted by the heart
ANP (atrial natriuretic peptide)
When the heart – due to elevated blood pressure, ANP is released
stretches
ANP decreases – by the nephrons
water and salt reabsorption
ANP results in less concentrated urine, a higher urine volume, and a – blood volume
lower
ANP causes a lower blood volume which means a – in blood pressure
decrease
As the kidneys filter blood, they also –
balance blood pH
T?F: A relatively minor change to blood pH can have drastic consequences
true
– mimic normal kidney functions for patients whose kidneys don’t work properly
dialysis
carbon dioxide interacts with water to produce
carbonic acid
carbonic acid can then dissociate into hydrogen ions and –
bicarbonate ions
blood pH can be adjusted by changing the amount of bicarbonate ions – and altering the amount of hydrogen ions retained in the nephrons
reabsorbed