The cranny of two layers in dural mater become large gradually so as to form various dural sinuses.
硬膜两层的裂隙逐渐扩大，形成各种形态的静脉窦。
Subdural hematomas are a result of tearing of the bridging veins which are located between the cortical veins and the dural sinuses.
硬膜下血肿是由于皮层静脉和硬膜窦之间的桥静脉的撕裂所致。
They are arteriovenous shunts located in the dura that usually involve large dural venous sinuses.
位于硬膜的动静脉分流常常累及大的硬膜静脉窦。
Arterial supply is usually through meningeal branches of the external carotid, internal carotid, and vertebral arteries. Drainage is via dural venous sinuses or other dural or leptomeningeal channels.
动脉血供一般是通过颈外动脉、颈内动脉及椎动脉的脑膜分支，分流是经由硬膜静脉窦或其他的硬膜或软脑膜血供。
Arterial supply is usually through meningeal branches of the external carotid, internal carotid, and vertebral arteries. Drainage is via dural venous sinuses or other dural or leptomeningeal channels.
动脉血供一般是通过颈外动脉、颈内动脉及椎动脉的脑膜分支，分流是经由硬膜静脉窦或其他的硬膜或软脑膜血供。
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