Each alveolus is surrounded by a web of blood capillaries supplied by the

The answer is pulmonary artery. This is an artery in the circulation that holds the deoxygenated blood from the heart to the lungs. The biggest pulmonary artery is the pulmonary trunk from the heart and the smallest are found next to the pulmonary alveoli.

the cells uses some of the atoms of the glucose molecules to atp molecules. the atoms of the glucose molecules will then be converted into energy which will be eventually stored in atp. the energy produced which are stored in atp are coming from the glucose’s chemical bonds.

the missing space is phylum