蛛网膜粒

Granulationes arachnoideae

定义

Muhammad A. Javaid

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蛛网膜颗粒是蛛网膜绒毛的聚集体。您可能会问,什么是蛛网膜绒毛?在上矢状窦的特定位置,蛛网膜穿过硬膜内层,形成通向静脉窦的开口。蛛网膜突入硬膜静脉窦的这些突起被称为蛛网膜绒毛或蛛网膜颗粒。每个蛛网膜绒毛作为单向瓣膜发挥功能,允许脑脊液从蛛网膜下腔流入硬膜静脉窦,但不允许反向流动。

參考資料

  • Snell, R.S. (2010). ‘Chapter 15: The meninges of the brain and spinal cord’, in Clinical Neuroanatomy. (7th ed.) Philadelphia: Wolters Kluwer Health/Lippincott Williams & Wilkins, pp. 435.

  • D.E. Haines. (2018). ‘Chapter 7: The Meninges’, in Fundamental Neuroscience for Basic and Clinical Applications (5th ed.) Editor(s): Duane E. Haines, Gregory A. Mihailoff. Elsevier, pp. 107-121.e1, ISBN 9780323396325, https://doi.org/10.1016/B978-0-323-39632-5.00007-4

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