44.5 Flashcards
1
Q
antidiuretic hormone
A
ADH is released from the posterior pituitary gland when the osmolarity of blood rises above a set point
–ADH increases epithelial permeability to water in distal tubes and collecting ducts
2
Q
the renin-angiotensin-aldosterone system
A
–blood pressure or blood volume in the afferent arteriole drops
-renin released from the JGA (juxtaglomerular apparatus)
converts angiotesinosin to angiontensin II
–angiotensin II raises blood pressure by constricting arterioles and triggers release of hormone aldosterone
-rise in blood pressure reduces release of renin
3
Q
ADH and RAAS has overlapping/distinct functions
A
atrial natriuretic peptide (ANP) opposes action of RAAS
