NUR 631 Renal
- juxtaglomerular apparatus
Answer in the nephron, the complex of cells from the distal tubule and the afferent arteriole which helps regulate blood pressure by secreting renin in response to blood pressure changes in the kidney; located near the glomeru- lus
- The macula densa cells respond to .
Answer changes in solute content of the filtrate
- juxtaglomerular cells
Answer The cells of the afferent artery at the juxtaglomerular apparatus. They are baroreceptors that secrete renin upon sensing a decrease in blood pressure.
- Renin
Answer hormone secreted by the kidney; it raises blood pressure by influencing vasoconstriction (narrowing of blood vessels)
- intercalated cells
Answer cells in the collecting ducts of the kidneys that can absorb potassium if necessary
- trigone of urinary bladder
Answer the area within the urinary bladder where the two ureteral orifices and urethral orifice are located
- detrusor muscle 1 / 2
Smooth muscle that compresses the urinary bladder and expels urine into the urethra.
- renin-angiotensin-aldosterone system
Answer -decreased blood pressure causes the juxtaglomerular cells of kidneys to secrete renin which converts angiotensinogen (inactive) to angiotensin I (active) which is then converted into angiotensin II by angiotensin-converting enzyme (ACE)
-Angiotensin II stimulates the adrenal cortex to secrete aldosterone
- leads to absorption of Na and increased blood pressure
-once blood pressure is restored, there is a decreased drive to stimulate renin release
- Angiotensin II
Answer A peptide hormone that stimulates constriction of precapillary arterioles and increases reabsorption of NaCl and water by the proximal tubules of the kidney, increasing blood pressure and volume.
- Glomerular Filtration Rate (GFR)
Answer amount of plasma filtered through the glomeruli per unit of time
- azotemia
Answer (excessive) urea and nitrogenous substances in the blood
- Prerenal failure labs
Answer BUN/ Creatinine ratio greater than 20
1
- intrarenal failure
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