Name: ________________________

Quiz 8 Biology 347- General Physiology Lab
11/16/2006 Dr. Stark

1. The inner portion is the kidney is referred to as the ___________ while the "bark" is
called the ___________.

medulla, cortex

2. How many nephrons are in each kidney?

1 million

3. How many liters/day of fluid does the kidney filter?

180

4. What is the difference between excretion and secretion?

out of the body, one place to another (internally)

5. What enzyme do JG (juxtraglomerular) cells release that affects salt balance?

renin

6. When the adrenal glands are taken out of a rat, what substance is significantly lost?

salt

7. What type of transporter allows sodium to leave the cell and return to the interstitial fluid?

Na+K+-ATPase

8. Water moves from a hypotonic solution to a hypertonic solution
via what process?

osmosis

9. What is the name of the pore that allows H2O to be recovered?

aquaporin-2


10. Which disease may allow glucose, in high concentrations, to enter the urine?

diabetes mellitis

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