The Descending Limb of the Loop of Henle

question 64

Multiple Choice

The descending limb of the loop of Henle .

• A)is not permeable to water
• B)contains fluid that becomes more concentrated as it moves down into the medulla
• C)pulls water by osmosis into the lumen of the tubule
• D)is freely permeable to sodium and urea

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Definitions:

Subject Attrition

The loss of participants during the course of a study, which can affect the validity and reliability of the research outcomes.

Generalizability

The extent to which the findings of a study can be applied to other populations, settings, or times.

Internal Validity

Internal validity refers to the extent to which a piece of research accurately measures or tests what it set out to measure or test, without being influenced by external factors. High internal validity means that the study design, conduct, and analysis ensure the study's findings are trustworthy.

External Validity

External validity refers to the extent to which the outcomes of a study can be generalized or applied beyond the specific study context or sample, including to other populations, settings, treatment variables, and measurement variables.