What is endocannabinoid system?

The endogenous cannabinoid system, named after the cannabis that led to its discovery, is perhaps the most important physiologic system involved in establishing and maintaining human health. Endocannabinoids and their receptors are found throughout the body: in the brain, organs, connective tissues, glands, and immune cells. In each tissue, the cannabinoid system performs different tasks, but the goal is always the same: homeostasis, the maintenance of a stable internal environment despite fluctuations in the external environment.

The endocannabinoid system consists of endogenous cannabinoids of endocannabinoids and cannabinoid receptors. The endocannabinoid system is involved with regulating many basic functions of the human body, including: 

Appetite
Metabolism
Pain
Sleep
Mood
Movement
Temperature
Memory and learning
Immune function
Inflammation
Neural development
Neuroprotection
Cardiovascular function
Digestion
Reproduction