Human Physiology

The Eleven Major Organ Systems of the Human Body Explained

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Your body is constantly busy, even when you are sitting still. Your heart pumps blood, your lungs exchange gases, your kidneys filter waste, and your nervous system processes information-all at the same time. These activities are possible because the human body is organized into interconnected organ systems. An organ system is a group of organs … Read more

How the Human Body Is Organized: From Cells to Organ Systems

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The human body can walk, think, digest food, fight infections, repair injuries, and perform thousands of other tasks. Yet none of these abilities depends on one structure working alone. Your body functions through an incredibly organized network of smaller parts. So, how is the human body organized? Scientists usually explain its structure through six main … Read more