Scientists Studying the Specifics of Human Kidney Function Develop a New

question 44

Multiple Choice

Scientists studying the specifics of human kidney function develop a new technique for measuring the concentration of various compounds along the length of the proximal tubule. They measure the concentrations of several endogenous substances in the fluid traversing the proximal tubule during an experiment. The following image depicts the tubular fluid/plasma ultrafiltrate concentration ratios for the measured substances: Which of the following substances are most likely to produce lines 2 and 4, respectively?

• A)Bicarbonate, sodium
• B)Creatinine, amino acids
• C)Creatinine, glucose
• D)Potassium, chloride
• E)Urea, bicarbonate

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Definitions:

Visual System

The part of the central nervous system which enables individuals to process visual detail, it includes the eye, retina, optic nerves, and brain visual cortex.

Depth Perception

The ability to perceive the visual world in three dimensions and to judge the distance of objects accurately.

Three Dimensions

The state or quality of having three measurements: length, width, and depth, used to describe the physical world and represented in geometry, design, and spatial understanding.

Figure-Ground Relationship

The principle by which we organize the perceptual field into stimuli that stand out (figure) and those that are left over (ground).