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25.6.1: Student Notebook Assignment

Anatomy and Physiology · LibreTexts

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    From LibreTexts, under CC BY 4.0, as the source states it; its equations are written in TeX, which the PDF shows typeset. This page at LibreTexts.

    Read only the part listed below. Take notes and answer questions as described. Each note taking instruction should be done in your own words, in 1-2 sentences or bullet points, unless otherwise stated.

    25.6 Tubular Reabsorption

    • Why is fluid reabsorption so important?
    • Describe what is secreted and reabsorbed in each area and how it is reabsorbed:
      • PCT
      • Loop of Henle
      • DCT
      • Collecting ducts
    • Explain the difference between active transport, symport, simple diffusion and facilitated diffusion and give an example of each.
    • Describe the movement of water and solutes in each part of the nephron.
    • Describe how the following solutes are reabsorbed and the importance of their reabsorption:
      • Glucose
      • Bicarbonate
    • Explain the importance of the long loop of Henle.
    • Explain why water is lost in the descending loop of Henle, but not regained in the ascending loop.
    • Explain the concept of a countercurrent multiplier system and how it works in the kidneys. What is the importance of this system to the function of the kidneys?
    • Describe the importance of urea in the maintenance of the osmotic gradient.
    • Describe the effect of parathyroid hormone on the forming urine.
    • Describe the location and roles of principal cells and intercalated cells.
    • Describe how ADH changes the collecting ducts to affect water reabsorption.
    • How will the blood change if ADH is circulating? How will the urine change?
    • How does aldosterone affect urine production? How is this different from the effect of ADH?

    Watch the YouTube video Urinary System, Part 1: Crash Course Anatomy & Physiology #38

    25.6.1: Student Notebook Assignment is shared under a CC BY 4.0 license and was authored, remixed, and/or curated by LibreTexts.