What is the name of the structure indicated by the blue arrow in the image below?
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Options:
explanation: The image shows a coronal view of a brain and the prosection is cut towards the posterior aspect, as the brainstem and the cerebellum are visible in the centre of the image. The inferior sagittal sinus is a small dural sinus found in the inferior margin of the falx cerebri, travelling superior to the corpus callosum. However, the blue arrow indicates the superior sagittal sinus, the largest of the dural venous sinuses in the brain, which travels in the midline, superior to the falx cerebri of the dura mater in between the frontal, parietal and occipital lobes of the brain.
name: Inferior sagittal sinus
label: b
answer: no
explanation: The image shows a coronal view of a brain and the prosection is cut towards the posterior aspect, as the brainstem and the cerebellum are visible in the centre of the image. The great cerebral vein of Galen is a deep cerebral vein formed by the union of the two basal veins of Rosenthal, the two internal cerebral veins and the superior cerebellar veins. The great cerebral vein of Galen unites with the inferior sagittal sinus to form the straight sinus of the brain. However, the blue arrow indicates the superior sagittal sinus, the largest of the dural venous sinuses in the brain, which travels in the midline, superior to the falx cerebri of the dura mater in between the frontal, parietal and occipital lobes of the brain.
name: Great cerebral vein of Galen
label: d
answer: no
explanation: The image shows a coronal view of a brain and the prosection is cut towards the posterior aspect, as the brainstem and the cerebellum are visible in the centre of the image. The blue arrow indicates the superior sagittal sinus, the largest of the dural venous sinuses in the brain, which travels in the midline, superior to the falx cerebri of the dura mater in between the frontal, parietal and occipital lobes of the brain.
name: Superior sagittal sinus
label: a
answer: yes
explanation: The image shows a coronal view of a brain and the prosection is cut towards the posterior aspect, as the brainstem and the cerebellum are visible in the centre of the image. The transverse sinuses are paired (left and right) dural sinuses which travel along the posterolateral border of the tentorium cerebelli. However, the blue arrow indicates the superior sagittal sinus, the largest of the dural venous sinuses in the brain, which travels in the midline, superior to the falx cerebri of the dura mater in between the frontal, parietal and occipital lobes of the brain.
name: Transverse sinus
label: e
answer: no
explanation: The image shows a coronal view of a brain and the prosection is cut towards the posterior aspect, as the brainstem and the cerebellum are visible in the centre of the image. The straight sinus is a dural sinus formed from the union of the inferior sagittal sinus and the great cerebral vein of Galen. It travels posteriorly to unite with the superior sagittal sinus at the confluence of sinuses. However, the blue arrow indicates the superior sagittal sinus, the largest of the dural venous sinuses in the brain, which travels in the midline, superior to the falx cerebri of the dura mater in between the frontal, parietal and occipital lobes of the brain.
name: Straight sinus
label: c
answer: no

Correct answer: a