Identify the structure indicated by the blue arrow in the image below.
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Options:
explanation: The image shows a prosection of a brain viewed from the lateral side, specifically its right hemisphere. The orientation is determined by the position of the cerebellum, which is found in the posterior and inferior aspect of the brain under the occipital lobe which is found posterior. Thus, the frontal lobe is on the right side of the image and the occipital lobe is on the left side of the image. The superior temporal sulcus is located parallel and inferior to the structure indicated by the arrow. It forms the inferior border of the superior temporal gyrus. However, the blue arrow points to the Sylvian fissure or lateral sulcus, which is one of the major sulci of the brain separating the temporal lobe inferiorly from the frontal and parietal lobes superiorly.
name: Superior temporal sulcus
label: e
answer: no
explanation: The image shows a prosection of a brain viewed from the lateral side, specifically its right hemisphere. The orientation is determined by the position of the cerebellum, which is found in the posterior and inferior aspect of the brain under the occipital lobe which is found posterior. Thus, the frontal lobe is on the right side of the image and the occipital lobe is on the left side of the image. The central sulcus, also called Rolandic fissure, is one of the major sulci of the brain, delineating the frontal lobe anteriorly and the parietal lobe posteriorly. It runs perpendicular to the indicated structure. The blue arrow points to the Sylvian fissure or lateral sulcus, which is one of the major sulci of the brain separating the temporal lobe inferiorly from the frontal and parietal lobes superiorly.
name: Central sulcus
label: b
answer: no
explanation: The image shows a prosection of a brain viewed from the lateral side, specifically its right hemisphere. The orientation is determined by the position of the cerebellum, which is found in the posterior and inferior aspect of the brain under the occipital lobe which is found posterior. Thus, the frontal lobe is on the right side of the image and the occipital lobe is on the left side of the image. The post-central sulcus is found posterior and parallel to the central sulcus of the brain, forming the posterior border of the post-central gyrus – the primary sensory cortex. However, the blue arrow points to the Sylvian fissure or lateral sulcus, which is one of the major sulci of the brain separating the temporal lobe inferiorly from the frontal and parietal lobes superiorly.
name: Post-central sulcus
label: d
answer: no
explanation: The image shows a prosection of a brain viewed from the lateral side, specifically its right hemisphere. The orientation is determined by the position of the cerebellum, which is found in the posterior and inferior aspect of the brain under the occipital lobe which is found posterior. Thus, the frontal lobe is on the right side of the image and the occipital lobe is on the left side of the image. The pre-central sulcus is found anterior and parallel to the central sulcus of the brain, forming the anterior border of the pre-central gyrus – the primary motor cortex. However, the blue arrow points to the Sylvian fissure or lateral sulcus, which is one of the major sulci of the brain separating the temporal lobe inferiorly from the frontal and parietal lobes superiorly.
name: Pre-central sulcus
label: c
answer: no
explanation: The image shows a prosection of a brain viewed from the lateral side, specifically its right hemisphere. The orientation is determined by the position of the cerebellum, which is found in the posterior and inferior aspect of the brain under the occipital lobe which is found posterior. Thus, the frontal lobe is on the right side of the image and the occipital lobe is on the left side of the image. The blue arrow points to the Sylvian fissure or lateral sulcus, which is one of the major sulci of the brain separating the temporal lobe inferiorly from the frontal and parietal lobes superiorly. If these lobes are retraced the insular lobe can be found in the depth of the Sylvian fissure.
name: Sylvian fissure
label: a
answer: yes

Correct answer: a