Ch. 19B Flashcards
1.What is the intrinsic ability of vascular smooth muscle to respond to pressure changes?
1.mygenic response
2.What process occurs when BP increases to balance GFR?
2.vasoconstriction
3.GFR can be maintained at normal levels across all blood pressures T/F
3.F
4.What is a mechanism through which changes in fluid flow through distal tubule influence GFR?
4.Tuboglomerular Feedback
5.What does tuboglomerular feedback do?
5.mechanisim that changes fluid flow through distal
6.What hormones cause vasodilation and vasoconstriction (respectively)?
6.angiutesin protaglandins
7.Which arterioles in the nephrons are stimulated by the sympathetic nervous system?
7.afferent and efferent
8.What is the response of the sympathetic nervous system when BP drops rapidly and severely?
8.blood loss and dehydration
9.How much of all the filtrate that moves into the Bowman’s capsule must be reabsorbed?
99%
10.Where does most reabsorption take place?
10.proximal
11.What two substances are reabsorbed by the nephrons?
11.water and ions
14.What substance actively competes with penicillin for secretion into the lumen of the nephron?
14.probendiad
15.How does probenicid benefit patients?
15.reduce the active secretion
16The urinary bladder is surrounded by;
16.smooth muscle
17.Which of the sphincter muscles in the urinary bladder is under conscious control and which is under unconscious control?
17.external consconsion , internal unconsious
