Lung alveoli & bronchus. Coloured Scanning Elec- tron Micrograph (SEM) of lung tissue,showing alveoli,a bronchus,and a pulmonary blood vessel. A longitudinal section through a branching bronchus-air tube (yellow and red) is seen. At lower right is a cross-sectioned pulmonary blood vessel (yellow). Spongy lung tissue (red) surrounds these two structures; this is made up of alveoli air sacs whose interstital walls are lined with blood capillaries. Air passes from the bronchus into the alveoli. Oxygen from the breathed-in air is absorbed into the blood and distributed to the rest of the body to be used in respiration. Magnification: x54 at 6x7cm size | |
Lizenzart: | Lizenzpflichtig |
Credit: | Science Photo Library / PROF CINTI & V. GREMET |
Bildgröße: | 3120 px × 2528 px |
Modell-Rechte: | nicht erforderlich |
Eigentums-Rechte: | nicht erforderlich |
Restrictions: | - |