azygos fissure and azygos lobe a rare anatomical variant seen on ct of the lung cat scan - 肺泡 個照片及圖片檔電腦斷層掃描
normal human lung. alveoli, alveolar (air) sacs, 50x at 35mm. shows the thin alveolar walls (simple squamous epithelium) adapted for gas exchange. the red structures in the walls are red blood cells in the pulmonary capillaries. - 肺泡 個照片及圖片檔上皮組織, 微絲血管
light micrograph of human sublingual salivary gland; mucous cells and a duct, 100x at 35mm. this is a mixed gland, but is mostly made up of mucous alveoli. - 肺泡 個照片及圖片檔細胞, 口水, 黏液
light micrograph of human parotid salivary gland. serous cells and a duct, 100x at 35mm. this gland only has serous secretory cells. serous cells secrete a watery fluid that may contain salivary amylase (an enzyme). - 肺泡 個照片及圖片檔細胞, 酵素, 唾腺
medical illustration showing pneumonia in the alveolus of human lungs. - 肺泡 幅插畫檔、美工圖案、卡通及圖標肺炎, 傳染病, 病毒
