What is the relationship between the respiratory system and the digestive system?
The respiratory system is dependant on the digestive system due to the fact that in order to produce energy the respiratory system needs glucose (C6H12O6) and the digestive system breaks down that glucose. Without the digestive system digesting glucose, the respiratory system would not be able to turn glucose to energy.
The digestive system requires oxygen, which is brought into the body through the respiratory system. The digestive system also needs nutrients, which along with oxygen are delivered to the digestive tissues by the cardiovascular system. The digestive system absorbs nutrients for the rest of the body and generates wastes such as carbon dioxide; these nutrients and wastes need to be removed from the digestive system by the cardiovascular system, and the respiratory system excretes the…
The respiratory system is connected to the circulatory system at the alveoli, where oxygen and carbon dioxide diffuse across the thin membrane between the two systems. The physical connection between the respiratory system and the digestive system occurs at the oropharynx, which carries both air and food.