Circulatory System

• The blood transports absorbed amino acids, monosaccharides, and other molecules from the intestine to liver, and then to other organs (p. 576)

• The hepatic portal vein allows some absorbed molecules to have an enterohepatic circulation (p. 576)

• The intestinal absorption of vitamin B12 (needed for red blood cell production) requires intrinsic factor, secreted by the stomach (p. 566)

• Iron must be absorbed through the intestine to allow a normal rate of hemoglobin production (p. 371)

• The liver synthesizes clotting proteins, plasma albumin, and all other plasma proteins except antibodies (p. 580)

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Essentials of Human Physiology

Essentials of Human Physiology

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.

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