nerve cell : a cell that’s receives and sends messages from the body to the brown and back to the body (the messenger )
circulatory system : an organ system that permits blood to circulate and transport nutrients to the body to provide nourishment
ground tissue system : the ground tissue of the vascular plant is responsible for storing the carbohydrates produced by the plant. (major cells are parenchyma cells that function photosynthesis and nutrient storage
brain: largest and most complex organs in the human body. it is made up of more than 100 billion nerves that communicate in trillions of connections.
hope that helps :3!