 Best pictures from the world of medicine
[ 2009-10-21 14:04 ]
14 人體股骨的密質(zhì)骨骼
如圖所示，這是人體股骨的密質(zhì)骨骼圖像，其中顯示出包含血管和結(jié)締體素的微型管道網(wǎng)絡(luò)。密質(zhì)骨使人體骨骼堅(jiān)硬有力，它是由多層有機(jī)物質(zhì)和無(wú)機(jī)鹽構(gòu)成的。
存活的密質(zhì)骨細(xì)胞在樣本制備過程中已被摧毀，留下小孔。空氣充斥在在這些小孔之中，由于視覺折射作用使用這些小孔呈現(xiàn)出黑色。圖片是由艾弗－梅森(Ivor Mason)拍攝并提供的。
This image of compact bone from a human femur shows a network of tiny canals that contain blood vessels and connective tissue. Compact bone provides strength and rigidity in the body, and is composed of a layered matrix of organic substances and inorganic salts. Living bone cells are destroyed during specimen preparation, leaving tiny holes. Air is often trapped inside these holes, giving the cavities a dark appearance because of optical refraction. (Image: Ivor Mason) [NewScientist]
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