EBK LIFE: THE SCIENCE OF BIOLOGY
EBK LIFE: THE SCIENCE OF BIOLOGY
11th Edition
ISBN: 8220103935432
Author: Sadava
Publisher: MAC HIGHER
bartleby

Videos

Question
Book Icon
Chapter 51, Problem 1Q
Summary Introduction

To review:

The relative medullary thickness (RMT) is a good predictor to determine an animal’s ability to produce concentrated urine or not, based on an RMT vs freezing point depression (FPD) plot.

Given:

The RMT and the FPD for different mammals are given in the Table 1:

Table 1: The RMT and FPD of different mammals.

Animal RMT FPD (ᵒC)
Beaver 1.3 0.96
Pig 1.6 2
Human 3 2.6
Dog 4.3 4.85
Cat 4.8 5.8
Lab rat 5.8 4.85
Kangaroo rat 8.5 10.4
Jerboa 9.3 12
Sand rat 10.7 9.2

Introduction:

RMT refers to the thickness of medulla of the kidney divided by volume (length X width X thickness) of the entire kidney. FPD is a test, which is used to measure the concentration of urine. It is known that fresh water freezes at 0°C, but the addition of solutes lowers this freezing temperature.

Expert Solution & Answer
Check Mark

Explanation of Solution

The graph plot between RMT and FPD is given in the Figure 1.

EBK LIFE: THE SCIENCE OF BIOLOGY, Chapter 51, Problem 1Q

Figure 1: Plot of RMT vs FPD.

It can be observed from the graph that as the RMT increases, the FPD also increases. This means that the concentration of the urine increases with an increase in relative length of loops of Henle. The graph follows an almost linearly increasing trend.

A slight deviation from the trend is observed in case of the laboratory rat and the sand rat.

Conclusion

Therefore, it can be concluded that the RMT is a good predictor of the ability of the mammal to produce concentrated urine.

Want to see more full solutions like this?

Subscribe now to access step-by-step solutions to millions of textbook problems written by subject matter experts!
Students have asked these similar questions
Using the data provided on the mean body mass and horn size of 4-year-old male sheep, draw a scatterplot graph to examine how body mass and horn size changed over time.
Please write a 500-word report about the intake of saturated fat, sodium, alcoholic beverages, or added sugar in America. Choose ONE of these and write about what is recommended by the Dietary Guidelines for Americans (guideline #4) and why Americans exceed the intake of that nutrient. Explain what we could do as a society and/or individuals to reduce our intake of your chosen nutrient.
Write a 500-word report indicating how you can change the quantity or quality of TWO nutrients where your intake was LOWER than what is recommended by the Dietary Guidelines for Americans and/or the DRIs. Indicate how the lack of the nutrient may affect your health. For full credit, all of the following points must be addressed and elaborated on in more detail for each nutrient: The name of the nutrient At least 2 main functions of the nutrient (example: “Vitamin D regulates calcium levels in the blood and calcification of bones.”) Your percent intake compared to the RDA/DRI (example “I consumed 50% of the RDA for vitamin D”) Indicate why your intake was below the recommendations (example: “I only had one serving of dairy products and that was why I was below the recommendations for vitamin D”) How would you change your dietary pattern to meet the recommendations? – be sure to list specific foods (example: “I would add a yogurt and a glass of milk to each day in order to increase my…
Knowledge Booster
Background pattern image
Biology
Learn more about
Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, biology and related others by exploring similar questions and additional content below.
Similar questions
SEE MORE QUESTIONS
Recommended textbooks for you
Text book image
Human Physiology: From Cells to Systems (MindTap ...
Biology
ISBN:9781285866932
Author:Lauralee Sherwood
Publisher:Cengage Learning
Text book image
Curren'S Math For Meds: Dosages & Sol
Nursing
ISBN:9781305143531
Author:CURREN
Publisher:Cengage
Text book image
Case Studies In Health Information Management
Biology
ISBN:9781337676908
Author:SCHNERING
Publisher:Cengage
Text book image
Aquaculture Science
Biology
ISBN:9781133558347
Author:Parker
Publisher:Cengage
Text book image
Biomedical Instrumentation Systems
Chemistry
ISBN:9781133478294
Author:Chatterjee
Publisher:Cengage
Text book image
Human Heredity: Principles and Issues (MindTap Co...
Biology
ISBN:9781305251052
Author:Michael Cummings
Publisher:Cengage Learning
Complications during Labour and Delivery; Author: FirstCry Parenting;https://www.youtube.com/watch?v=QnCviG4GpYg;License: Standard YouTube License, CC-BY