LESSON 12 Biology 1112

Biology 1112
Introductory Biology I I
On-Line

ACTIVITIES
Lesson 12

Control of the Internal Environment:
Osmoregulation & Excretion

Lesson Facilitators

Primary Facilitator
Dr. Nickie Cauthen, Assistant Professor of Biology, Clayton College and State University

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Secondary Facilitator
Dr. C. Blaine Carpenter, Professor of Biology, Clayton College and State University

Each lesson consists of 10 activities. We suggest that you proceed through the lesson in the order that the activities are presented. Should you NOT complete a particular activity, remember to go back to it as soon as you can.

Send Dr. Cauthen an E-mail as soon as you know you have a question... or you may put a message on the Bulletin Board on WebCT. If you need help with WebCT, you can get a tour at:

WebCT Student Guide which is located at http://learningcenter.clayton.edu/fidl/onlinetr/student_webct/studentwebct/webct/webct_table_content.htm

INDEX OF ACTIVITIES

I. Introduction to Lesson 12

Welcome to Lesson 12 !!

While extremely efficient, the cells of our body are unable to use all of the foods and fluids we take in. Also, there are by-products of cellular metabolism that are useless, even dangerous to the organism.

Normal adult kidney

Blood vessels in the human kidney

To deal with the build-up of these left-over waste materials, and preserve the normal volume and composition of their internal fluid environment, animals have evolved sophisticated systems of excretion. In human beings, this system includes the kidneys and vessels of the urinary tract. Different sorts of excretory mechanisms are observed in other animals. As usual, we will compare some mechanisms, and study the overall function of the urinary system in humans.

II. Objectives

Click here to review the objectives for Lesson 12.This is a VERY important step, as we let you know in the objectives exactly what you need to know.

III. Key Terms

Familiarize yourself with the key terms below. They are used in the text, the tutorial, the Interactive Study Partner, and the Cycles of Life Video.

nitrogenous waste urea urinary system kidneys

cortex medulla urine ureter

urinary bladder urethra nephrons Bowman's capsule

glomerulus proximal tubule loop of henle distal tubule

peritubular capillaries filtration tubular reabsorption tubular secretion

ammonia antidiuretic hormone (ADH) uric acid dialysis

IV.Text Pages

Read Chapter 25, pp. 506-514 in Biology, Concepts and Connections by Campbell, Mitchell, and Reece.

V. Interactive Study Partner CD-Rom

Put your Interactive Study Partner CD-Rom into the CD player on your computer.

Proceed to Activities
Choose Chapter 25: Control of the Internal Environment

25A Structure of the Excretory System
25B Nephron Function
25C Control of Water Reabsorption

Take the quiz.

Record your results on the quiz in your journal and review the items that you missed on the CD-ROM, in the tutorial, or in the textbook.

THIS IS A VERY IMPORTANT STEP FOR THIS WEEK.... DO IT NOW!!

VI. Cycles of Life Video

Watch Video Lesson 20 - Animals: Digestion and Fluid Balance. The video is about 28 minutes in length but for this lesson we are only focusing on the portions of the video that deal with the urinary system.

Click here for a viewing guide for the video. Answer the questions in the viewing guide before proceeding.

VII. Web Work

To refine your studies you will need to go to the Internet (WWW), and work with more sources. Proceed to the following.

Read the summary of Chapter 25 from the Campbell Web Site
Online Biology Book (Very good): Circulatory System
Kangaroo Rats
Inner body: Excretory System
Check the Web Links for Chapter 25 on the Biology Place .

VIII. Tutorial

You should complete the Web Work before the tutorial.

Lesson 12 Tutorial for the Excretory System

Click on the tutorial button to guide you with the concepts. Work problems in your notebook, and take notes as you would in class. Save the tutorial at least until the next major test; then you won't have to transfer it again. The tutorials will not fit onto a floppy disk; you will need to save it to your hard drive.

Dr. Cauthen if you need help!!

You may open the tutorial with Internet Explorer or you may save the tutorial to your hard drive. You can then view the file in PowerPoint and print it out if you wish. You must use all links, and make notes as you go through the tutorial. Please have your CD in the drive while you work on the tutorial. You might decide to review from it.

IX. Study Guide and Practice Tests

Study Guides and Practice Tests enable you to assess yourself and your progress.

Review Chapter 25 questions in the Study Guide .
Review the quiz from the CD-Rom, Interactive Study Partner.
Take the practice quiz on the Campbell Web site.

X. Assignments

This assignment is combined with the content from Lessons 11 & 12

1. Download the Assignment/Quiz. (This link is now active.)

2. Download the Answer Sheet. (This link is now active.)

3. Download the Answer KEY.

Type in your responses on the answer sheet, and send the answer sheet file to Dr. Cauthen following the instructions below.

You may use any of your class materials to answer the questions. You may not communicate with each other or with any other person regarding the contents of the assignment or answers. Neither Dr. Cauthen nor Dr. Carpenter will answer questions about content on the assignment.
The assignment will be posted on April 19 by 5:00 p.m. It is due on April 23 before midnight (actually 11:55 p.m.).

Download the Assignment and Assignment answer sheet. If the answer sheet is provided, you should submit it to be graded. (This link is now active.)
Use the right mouse "save target as" function to save the assignment to your hard drive. (This should be a Microsoft Word document.) Complete the assignment. The file name you use is your first initial followed by your last name and "assign6". Example: ncauthenassign6 WebCT does not allow spaces in the file name.
To submit the assignment do the following or go to http://webct.clayton.edu for more explicit instructions
- Log in to WebCT BIOL1111 online
- Click on the Evaluation Tools icon
- Click on the Assignments icon
- Click on the hyperlink for the Assignment that you want to submit (Assignment 6)
- Click on the Student Files button
- Click on the Upload button
- Click on the Browse button
- Find the file on your hard drive that you wish to submit (ncauthenassign6) and select it and then click on open
- Click the Upload button
- Click on the Return to the Assignment hyperlink
- Click on the Submit Assignment button
- Click on the Submit Assignment button and type your e-mail address in the box if you want to be notified when the assignment has been received.
- Click OK in the confirmation box
- The information that appears should show the assignment and should say not graded or graded (this means that it has been submitted). You only get one chance to submit your assignment.
This assignment/quiz will be due on Tuesday, April 23, 2002 at midnight (actually 11:55 p.m.). WebCT will automatically turn the submission feature off at 11:55 pm.

Back to the Biol 1112 Home Page

nitrogenous waste	urea	urinary system	kidneys
cortex	medulla	urine	ureter
urinary bladder	urethra	nephrons	Bowman's capsule
glomerulus	proximal tubule	loop of henle	distal tubule
peritubular capillaries	filtration	tubular reabsorption	tubular secretion
ammonia	antidiuretic hormone (ADH)	uric acid	dialysis