The Fluid Entering the Distal Tubule from the Loop of Henle

question 20

Multiple Choice

The fluid entering the distal tubule from the loop of Henle

• A) Is hypoosmotic to plasma
• B) Has the same volume as fluid that enters the loop of Henle
• C) Has all the urea that was present at the end of the proxim al tubule
• D) Has the same creatinine concentration as the fluid that enters the loop of Henle because creatinine is not reabsorbed in the loop
• E) Is in osmotic equilibrium with the kidney interstitium

---

Definitions:

Optimal Allocation

The most efficient distribution of resources within an economy to maximize the output or welfare.

MB = MC

A principle in economics indicating the optimal level of output or consumption, where the marginal benefit (MB) equals the marginal cost (MC).

Marginal Benefit

The added utility or pleasure that comes from the consumption of one more unit of a good or service.

Marginal Cost

The escalation in aggregate cost linked to the fabrication of an extra item of a good or service.