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1. What is the functional unit of the kidney called: Nephron
2. The only surface inside the nephron where cells are covered with microvilli to
increase the reabsorptive surface area is called the: Proximal convoluted tubules
3. What part of the kidney controls renal blood flow, glomerular filtration, and
renin secretion: Juxtaglomerular apparatus (JGA)
4. The glomerular filtration rate is directly related to which factor: Perfusion pressure
in the glomerular capillaries
5. What effects do exercise and body position have on renal blood flow: They activate
renal sympathetic neurons and cause mild vasoconstriction
6. Blood vessels of the kidneys are innervated by the: Sympathetic nervous system
7. When renin is released, it is capable of which action: Formation of angiotensin I
8. What effect do natriuretic peptides have during heart failure when the heart
dilates: Inhibits renin and aldosterone
9. What is the direct action of atrial natriuretic hormone: Sodium excretion
10. What term is used to identify the movement of fluids and solutes from the
tubular lumen to the peritubular capillary plasma: Tubular reabsorption
11. Compared with a younger individual, how is the specific gravity of urine in
older adults affected: Specific gravity of urine in older adults is considered low normal
12. What is the most common cause of uncomplicated urinary tract infection: -
Escherichia coli
13. Which clinical manifestations of a urinary tract infection may be demonstrat-
ed in an 85-year-old individual: Confusion and poorly localized abdominal discomfort
14. Anemia of chronic renal failure can be successfully treated with which ele-
ment: Erythropoietin
15. What medical term is used to identify a functional urinary tract obstruction
caused by an interruption of the nerve supply to the bladder: Neurogenic bladder
16. What initiates inflammation in acute poststreptococcal glomerulonephritis-
: Immune complexes
17. Acute glomerulonephritis (AGN) may be accompanied by a positive throat or
skin culture for which bacteria: streptococcus
18. What is the cause of smoky, brown-colored urine resulting from acute post-
streptococal glomerulonephritis: Presence of red blood cells
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