• The blood transports oxygen and nutrients to all systems, including the urinary system, and removes wastes (p. 366)
• The heart secretes atrial natriuretic peptide, which helps to regulate the kidneys (p. 418)
• Erythropoietin from the kidneys stimulates red blood cell production (p. 371)
• The kidneys filter the blood to produce urine, while regulating blood volume, composition, and pressure (p. 524)
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This ebook provides an introductory explanation of the workings of the human body, with an effort to draw connections between the body systems and explain their interdependencies. A framework for the book is homeostasis and how the body maintains balance within each system. This is intended as a first introduction to physiology for a college-level course.