Solution-What does a specific gravity test measure
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May 3, 2020Range of mechanical properties for bone
May 3, 2020Solution-What does a specific gravity test measure
Case Study-
Structure and Function of the Kidney
Rivka is an active 21-year-old who decided to take a day off from her university classes. The weather was hot and the sun bright, so she decided to go down to the beach. When she arrived, she found a few people playing beach volleyball, and they asked if she wanted to join in. She put down her school bag and began to play. The others were well prepared for their day out and stopped throughout the game to have their power drinks and soda pop. Several hours after they began to play, however, Rivka was not feeling so good. She stopped sweating and was feeling dizzy. One player noted she had not taken a washroom break at all during the day. They found a shaded area for her, and one of the players shared his power drink with her. Rivka was thirstier than she realized and quickly finished the drink.
- In pronounced dehydration, hypotension can occur. How would this affect the glomerular filtration rate of the kidney? What actions by the juxtaglomerular apparatus would occur to restore GFR?
- What is the effect aldosterone has on the distal convoluted tubule? Why would the actions of aldosterone be useful to Rivka in her situation?
- What does a specific gravity test measure? If someone tested the specific gravity of Rivka’s urine, what might it indicate?
Verified Expert
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According to the present situation of Rivka, the symptoms like dizziness, excessive thrust, less or no urination, stopped sweating are symptoms indicating the dehydration condition of the Rivka.
It is true that pronounced dehydration can cause hypotension. Hypotension which is low blood pressure can cause renal failure. In other words if it is correlated with water , when water content is high it will keep the blood pressure normal but when the water content is low it will increase the blood pressure.
Now when water/fluid in the blood increases, the kidney needs to filter and excrete it from the body through urine and sweating etc to keep the body in normal condition. In the present case Rivka was taking water but no water is coming out from her body, means both her kidneys are not filtering anything.
