There are 12 major anatomy systems: Skeletal, Muscular, Cardiovascular, Digestive, Endocrine, Nervous, Respiratory, Immune/Lymphatic, Urinary, Female Reproductive, Male Reproductive, Integumentary. Select a system below to get started.

Mar 13, 2025 · human body, the physical substance of the human organism, composed of living cells and extracellular materials and organized into tissues, organs, and systems. Human anatomy and physiology are treated in many different articles.

Sep 19, 2024 · There are 11 major organ systems in the human body: Organ systems work together to keep the body in good health. For example, the circulatory and digestive systems work jointly to deliver nutrients throughout the body. Except for the reproductive system, each system is necessary for survival.

Jan 26, 2024 · The five vital organs in the human body are the brain, heart, lungs, kidneys, and liver. Other organs include the gallbladder, pancreas, and stomach. Organ systems, such as the...

A free website study guide review that uses interactive animations to help you learn online about anatomy and physiology, human anatomy, and the human body systems. Start Learning now!

Apr 5, 2024 · Our bodies consist of a number of biological systems that carry out specific functions necessary for everyday living. Some organs and tissues play roles in multiple systems at once. Circulatory:...

Nov 3, 2023 · The human body is a biological machine made of body systems; groups of organs that work together to produce and sustain life. Sometimes we get lost while studying about cells and molecules and can’t see the forest for the trees.

How does the human body work? What roles do the digestive, reproductive, and other systems play? Learn about human anatomy and the complex processes that hel...

Apr 5, 2025 · Learn about the bones, joints, and skeletal anatomy of the human body. The skeletal system includes all of the bones and joints in the body. Each bone is a complex living organ that is made up of many cells, protein fibers, and minerals.

Learn how the lungs provide the breath of life and see the debilitating effects of asthma. Watch how aging and stresses like cuts and sunlight can affect the body's largest organ. The human...