摘要目的为了探讨人松果体脑砂的结构特征和化学成分。方法对经NaOH消蚀处理的人松果体内脑砂，进行了扫描电镜观察和化学元素分析。结果松果体组织块经用NaOH消蚀处理后，其内部的脑砂能被清晰的暴露，并可制得单纯的脑砂样品。松果体脑砂大小不等，常呈桑椹状球形小体；既可存在于松果体的中央区，也可位于松果体的周边部。构成脑砂的化学元素，主要为钙(54.82%)和磷(25.83%)，还有少量银(16.01%)和铁(3.34%)等；钙/磷比值约为2.12/1。结论扫描电镜观察和化学元素分析的结果提示，脑砂似为矿物质在松果体内的逐渐沉积，更象是一种复杂的时间-数量性矿化，而非简单的年轮样钙化。

The SEM-observation and Chemical Elements Analysis of Brain Sands in Human Pineal Bodies Prepared with NaOH-Maceration

Wang Baozhi, Wang Li, Wang Jianqin, et al

(Department of Human Anatomy, Hebei Medical University, Shijiazhuang, 050017)

AbstractObjectiveTo explore the structural feature and chemical elements of the brain sands in human pineal bodies.MethodsThe brain sands of human pineal bodies treated with NaOH-maceration were observed with scanning electron microscope (SEM), and analyzed for its chemical elements.ResultsThe brain sands in pineal bodies treated with NaOH-maceration were clearly exposed, and the pure specimens of brain sands were made up. The pineal brain sands appearing large or small mulbeny-globules, exist within either central region or peripheral position of pineal body. The chemical elements of brain sands are more calcium (54.82%) and phosphorus (25.83%), and less silver (16.01%) and iron (3.34%), Calcium/phosphorus rate was approximately 2.12/1.ConclusionThese results indicate that the brain sands is deposited gradually in pineal bodies by minerals, and is a complex time-quantitative mineralization rather than a simplex annual-ring calcification.

Key wordsbrain sand; SEM; chemical elements analysis; pineal body; human

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