Alveoli in lungs. A pulmonary alveolus (plural: alveoli, from Latin alveolus, "little cavity") is a hollow cup-shaped cavity found in the lung parenchyma where gas exchange takes place. T-shirt #482718088
This unisex t-shirt is a wardrobe staple that effortlessly matches any outfit. Made from robust cotton, it showcases a double-stitched neckline and sleeves for exceptional durability.