Scientists Investigating the Specifics of Kidney Function in Humans Develop

question 234

Multiple Choice

Scientists investigating the specifics of kidney function in humans develop a new technique allowing them to measure the concentration of various compounds along the length of the proximal tubule.  During an experiment, they record the concentrations of several endogenous substances in the fluid traversing the proximal tubule.  Tubular fluid/plasma ultrafiltrate concentration ratios for the measured substances are shown in the image below: 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

---

Definitions:

Occipital Lobes

The region of the brain located at the back, responsible for processing visual information received from the eyes.

Sensing Touch

The perception or sensation induced by physical contact with objects or individuals, enabled by the body's sensory receptors.

Limbic System

An intricate network of neural pathways in the brain, responsible for fundamental emotions like pleasure and fear, as well as basic instincts like sexual drive and the need for food.

Sexual Behavior

Actions or practices related to the expression of sexuality, including activities, preferences, and orientations.