There are 11 major organ systems in the human body, which include the circulatory, respiratory, digestive, excretory, nervous and endocrine systems. The immune, integumentary, skeletal, muscle and reproductive systems are also part of the human body. read more
There are 13 major organ systems in human body. The organs work together systematically to keep you alive and active and each plays a specific role related to your health and development. By definition, an organ is a structure that comprises at least two kinds of tissue that function together for a common purpose. read more
The main systems of the human body are:. Circulatory system. Circulates blood around the body via the heart, arteries and veins, delivering oxygen and nutrients to organs and cells and carrying their waste products away. read more