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. New research finds there is significant variation in the anatomy of the human digestive system, with pronounced differences possible between healthy individuals.

Understanding the Context

The finding has implications for ... 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. This article discusses the anatomy of the human body systems.

Key Insights

Learn everything about all human systems of organs and their functions now at Kenhub! Anatomy is the science that studies the structure of the body. On this page, you'll find links to descriptions and pictures of the human body's parts and organ systems from head to toe. The nervous system directs our body’s reactions to the world and also controls most of our internal functions, everything from muscle movement and blood vessel dilation to the learning of anatomy and physiology facts. The human digestive system refers to the organs that take in food and break them down.

Final Thoughts

Digestion describes the complex process that enables the nutrients in food to enter the body and its cells. Food ... Digestive enzymes are found in the digestive system, including the mouth, stomach, and small intestine. They help you break down food and absorb nutrients. Sometimes, the body cannot make enough ... The digestive system is a group of organs that work together to change the food you eat into the energy and nutrients your body needs.

After you consume food and liquids, the digestive system breaks ...