Entry 20. What is an apical brush border and why do these cells have it? Nephron Structure and Circulation Fill in the blanks to complete some thoughts on how the nephron works. The blood first enters the (21), which filters small molecules out of the afferent arteriole. Larger molecules such as (22) do not enter the nephron. Proteins (Can or Can not?, 23) enter the nephron. Amino acids and glucose are placed back into the blood stream by the cells of the (24)_. As the material that becomes urine travels down the descending limb of the loop, a good amount of (25)is removed. The ascending limb is responsible for removing (26)_ through the process of active transport. Urine is further concentrated by removal of some water in the collecting duct.

Human Anatomy & Physiology (11th Edition)
11th Edition
ISBN:9780134580999
Author:Elaine N. Marieb, Katja N. Hoehn
Publisher:Elaine N. Marieb, Katja N. Hoehn
Chapter1: The Human Body: An Orientation
Section: Chapter Questions
Problem 1RQ: The correct sequence of levels forming the structural hierarchy is A. (a) organ, organ system,...
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**Entry 20: What is an apical brush border and why do these cells have it?**

**Nephron Structure and Circulation**

Fill in the blanks to complete some thoughts on how the nephron works.

The blood first enters the _______ (21) which filters small molecules out of the afferent arteriole. Larger molecules such as _______ (22) do not enter the nephron. Proteins _______ (Can or Can not?) enter the nephron. Amino acids and glucose are _______ (23) placed back into the bloodstream by the cells of the _______ (24). As the material that becomes urine travels down the descending limb of the loop, a good amount of _______ (25) is removed. The _______ (26) limb is responsible for removing _______ through the process of active transport. Urine is further concentrated by removal of some water in the collecting duct.

---

**Diagrams Explanation:** 

A simple circular diagram is present on the page. However, specific details or labels within the diagram are not provided in the text available. It could potentially represent a nephron or related structure but would require additional context or labels for further clarification.

(Page 5 is noted at the bottom left of the image.)
Transcribed Image Text:**Entry 20: What is an apical brush border and why do these cells have it?** **Nephron Structure and Circulation** Fill in the blanks to complete some thoughts on how the nephron works. The blood first enters the _______ (21) which filters small molecules out of the afferent arteriole. Larger molecules such as _______ (22) do not enter the nephron. Proteins _______ (Can or Can not?) enter the nephron. Amino acids and glucose are _______ (23) placed back into the bloodstream by the cells of the _______ (24). As the material that becomes urine travels down the descending limb of the loop, a good amount of _______ (25) is removed. The _______ (26) limb is responsible for removing _______ through the process of active transport. Urine is further concentrated by removal of some water in the collecting duct. --- **Diagrams Explanation:** A simple circular diagram is present on the page. However, specific details or labels within the diagram are not provided in the text available. It could potentially represent a nephron or related structure but would require additional context or labels for further clarification. (Page 5 is noted at the bottom left of the image.)
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