BIOLOGY
by Miller & Levine
[complete Table of Contents]

Use the pull-down menu to jump to any of the Book's 40 Chapters:

Chapter 38
DIGESTIVE AND EXCRETORY SYSTEMS 

In this chapter, students will read about the structure and function of the digestive system, the processes of digestion and assimilation, and the basic categories of nutrients. They will also read about the structure and function of the excretory system, including its roles in waste control and homeostasis.

Hot Links Take it to the Net
Chapter Self-Test Teaching Links

What are Web Codes?

Web Codes for Chapter 38:
• Active Art: Food Pyramid Guide
• Scilinks: Nutrition
• SciLinks: Digestion
• SciLinks: Excretory system
• Self-Test
New (pre-publication) Science & Society Feature:
Too Big for our Own Britches?
Obesity Index - State-by-State

HHMI Biointeractive
The Howard Hughes Medical Institute's web site for teachers and students features a 2004 lecture on obesity.

Is Obesity Bad for Your Health?
You bet it is. Here are some of the reasons why.
Is Obesity Expensive?
Take a look!

Leptin - a Magic Bullet?
What is Leptin? And why does it have researchers excited?

BMI - What is Body Mass Index?
And, how do I calculate mine?
(Click Here for NIH's BMI calculator)

Genes or Environment?
What determines Obesity?
(A video report on the Pima Indians of the Southwest)

US Obesity Trends
(including movie and ppt file)
Are Americans getting leaner and meaner?
Are teenagers following the same trend?

The Food and Nutrition Information Center
http://fnic.nal.usda.gov/

Nutritional Values For Common Foods And Products
http://www.nutritionvalue.org/

NutritionData.com: Nutrition facts, calories in food, labels and more
http://nutritiondata.self.com/
   

 

Additional Resources:

Choose My Plate
(A USDA food information site)

Dieting Problems tied to Hunger Hormone
A Science News story on one of the ways in which hormones influence nutrition and dieting.

Why are grains so healthy?
One of the reasons may be their effect on insulin. (A Science News story).

Vitamin B12 - What is it good for?
The surprising answer may turn out to be: Your Heart! (A Science News story)

FOOD CONTROVERSY: Nutritional scientists continue to suggest that the "Food Pyramid" needs major revision. (Copies of the old, the new, and the newest pyramids are at right). See the January 2003 issue of Scientific American: "Rebuilding the Food Pyramid."

 

Evolving Food Pyramids:

Food Pyramid (2001)
Food Pyramid (2003)
Food Pyramid (2005)

Video Explanation of the New Pyramid


Confused about Food Choices?

Visit: choosemyplate.gov

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