Chapter 23: The Circulatory, Respiratory, Digestive, and Excretory Systems Difficulty Level: At Grade Created by: CK-12 Share Turn In Read Resources Details Chapter Outline Loading... Chapter Summary Image Attributions Show Hide Details Description This chapter covers the structures and functions of the circulatory, respiratory, digestive, and excretory systems. An overview of the Food Pyramid is also presented. Authors: Jean Brainard, Ph.D. Contributors: Niamh Gray-Wilson Tags: absorption aorta atria (36 more) bronchi carbohydrate cardiovascular system circulatory CK.SCI.ENG.SE.1.Biology.23 clot coronary circulation diaphragm digestion digestive system eating disorder elimination erythrocytes excretion fibrin gas exchange heart attack hemoglobin homeostasis homeostatic hypertension imbalance kidney leukocytes lifestyle diseases lipid MyPyramid nephron Nutrient nutrition plaque protein SA node Valves vena cava ventricles Subjects: science Grades: 9 , 10 Date Created: Sep 19, 2013 Last Modified: Mar 16, 2017 Save or share your relevant files like activites, homework and worksheet.To add resources, you must be the owner of the FlexBook® textbook. Please Customize the FlexBook® textbook.