Phys #11.txt

What are three main kidney balances?
- Sodium
- Potassium
- Water
What is the steady state amount of kidney urine balance?

1100 ml
What state is a person in if their urine flow is >1000 ml?

Negative water balance
What diseases can cause a Positive Water Balance?
- Congestive Heart Failure
- ADH (Salt retention)
- excess steroids
What is the function of the renal corpuscle?

Filtration (but not proteins)
What is the job of the proximal tubule?

reabsorption (60-80%)
Does the urine concentrate in the proximal tubule?

No, osmotic gradient maintained
In the distal tubule, what controls urine permeability?

Vasopressin
What nephrons concentrate urine: Cortical or Juxtaglomerular?

JGA
What cells in the nephron system release Renin?

Granular (juxtaglomerular) cells
What are the two capillary beds in the nephron system?
- Glomerular
- Peritubular:
- - cortical
- - vasa recta
Are renal nerves sympathetic or Parasympathetic?

Sympathetic
What is the main SNS neuron: alpha or beta?

Alpha
Where is the alpha SNS receptor mainly found: efferent or afferent arterioles?

Afferent
What are the four components of renal function?
- Glomerular filtration
- Tubular secretion
- Tubular reabsorption
- Excretion
In the JGA, what contracts the mesangial cells?

ANG II
What opposes constant SNS stimulation of the nephrons?

PGE₂ and PGI₂

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kepling

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Phys #11.txt

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Phys #11

Updated

2011-04-04T22:48:27Z

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