Flashcards in Set 21 Renal and Respiratory Phys Deck (48):
What is the order of blood flow in the kidney?
renal artery, interlobar, arcuate, interlobar, afferent arteriole, glomerulus, efferent arteriole, peritubular caps, venules, interlobar vein, arcuate vein, interlobar vein, renal vein, IVC
Where does urine flow in the kidney?
collecting duct, calyx, renal pelvis, ureter, bladder, and urethra
What is the nephron?
function unit of the kidney
How much does the kidney filtrate per day?
What is the function of Bowman's Capsule?
What is the function of the proximal tubule?
What are podocytes?
cells forming filtration membrane
What is the function of the Loop of Henle?
counter current concentration
What are the vasa recta?
thin walled vessels, parallel loops of henle
What happens in the distal tubule?
aldosterone reabsorbs Na+ and secretes K+
filtered - reabsorbed + secreted
How much filtrate is reabsorbed by the end of the proximal tubule?
How much filtrate is reabsorbed by the end of the distal tubule?
What is the normal glomerular filtration rate?
What is normal glomerular filtration rate determined by?
What are juxtaglomerular cells?
mechanoreceptors for BP
What is the macula densa?
chemoreceptors by the juxtaglomerular cells
Where does aldosterone come from?
zona glomerulosa as a result of the renin-angiotensin system
What is erythroprotein?
made in the kidney, stimulates RBC production
Where is renin made?
Where does Angiotensin I work?
in the blood
What is A.C.E.?
angiotensin converting enzyme
Where is A.C.E. made?
What is the function of angiotensin II?
constricts blood vessels (^ BP) and stimulates the release of aldosterone (long term ^BP by ^ Na+ reabsorption)
What is respiratory acidosis?
^pCO2 and \/ pH
What is respiratory alkalosis?
\/pCO2 and ^pH
What is v
\/ HCO3- and \/pH
What is metabolic alkalosis?
^ HCO3- and \/pH
What is a common cause of respiratory acidosis?
What is a common cause of respiratory alkalosis?
What is a common cause of metabolic acidosis?
diarrhea, ketosis, and renal dysfx
What is a common cause of metabolic alkalosis?
drugs, vomiting, and diuretics
Where is the best ventilation perfusion ratio in the lungs?
What part of the lungs has very little ventilation?
Where is surfactant made?
type II alveolar cells
What happens when surfactant is missing?
hyaline membrane disease
what is the function of lipoprotein?
keep lungs expanded, decrease surface tension
What is the function of the pneumotaxic center?
turns of inspiratory center before overexpansion of the lungs
What is the Herring-Breuer reflex?
stretch receptors prevent over stretch of lungs