Question

RENAL PHYSIOLOGY AND HOMEOSTASIS

Questions/Analysis

Part A.

1. Explain the process of urine moving out of the dialysis tubing (blood) into the cup. How does this relate to blood dialysis of patients with kidney disease?

Part B.

1. Summarize, briefly, the significance of the following parameter measured.

Color -

Nitrate -

Urobilinogen -

Protein -

pH -

Blood -

Specific Gravity -

Ketone -

Bilirubin -

Glucose -

Part C.

Parameter	Describe this parameter or measurement	Should or should not be present in urine?	Abnormal values could indicate what?
Nitrate	Usually produced by bacteria that are present and causing infection	No	A positive test could be indicative of infection
Urobilinogen
Protein
pH
Blood
Specific Gravity
Ketone
Bilirubin
Glucose

1. What potential treatment groups could cause an increase in ADH secretion? Explain why.

2. What potential treatment groups could cause a decrease in aldosterone secretion? Why?

3. What is the impact of blood pressure on kidney function?

4. Illustrate the kidney’s handling of water and salt loads? Explain.

5. What are potential sources of error in these experiments?

6. The loss of water during sweating on a hot day causes the blood volume to decrease and the osmolarity of body fluids to increase. Outline the mechanisms operating to restore homeostasis via the release of ADH in this situation.

7. Why would prolonged elevations of blood aldosterone produce hypertension?

8. Explain, physiologically, why a person urinates more after a night of beer consumption.