<prompt> Choose the appropriate lettered structure in this MRI scan showing a sagittal section through the head and neck. Which structure runs along the line of attachment of the falx cerebri to the tentorium cerebelli?ABCD  <response>: d The straight sinus runs along the line of the attachment of the falx cerebri to the tentorium cerebelli, which supports the occipital lobe of the cerebrum and covers the cerebellum. 