Red blood pressure it have dense oxygen from the heart to tissue, cells or body parts.
Capillary Body Part Pictures, Images and Stock Photos
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A pulmonary alveolus is one of millions of hollow, distensible cup-shaped cavities in the lungs where pulmonary gas exchange takes place. Oxygen is exchanged for carbon dioxide at the blood–air barrier between the alveolar air and the pulmonary capillary. Alveoli make up the functional tissue of the mammalian lungs known as the lung parenchyma, which takes up 90 percent of the total lung volume.
Royalty free stock image, an artistic medical illustration of the vascular system (circulatory system) on black background - high quality 3D render of red blood vessels full of blood. You can find similar images in my portfolio, where veins and arteries are colored differently, veins are blue and arteries are red. You can also find similar images on white background.