Term
| What is the ventral, motor component of the embryonic spinal cord called? |
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Definition
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Term
| What structure separates the basilar motor and alar sensory portions of the proliferative zone of cells in the embryonic neural tube? |
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Definition
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Term
| Where in the pre-central gyrus is the leg represented? |
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Definition
Medially
Laterally is where you find hands and face |
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Term
| What functions are associated with the superior and inferior parietal cortex? |
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Definition
Posterior to the somatosensory strip, the superior parietal lobule and inferior parietal lobules are separated by the intraparietal sulcus.
These structures are important for locating our body within the environment and for recognizing our body as part of us (think about hemispheral neglect). |
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Term
| What regions are included in the Calcarine cortex? |
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Definition
The Cuneus (superior) and Lingual (inferior) Gyri separated by Calcarine Sulcus.
Underneath the Lingual gyrus lies the straight sinus running within the tentorium cerebelli. |
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Term
| Where do you find the primary auditory receiving area of the cortex? |
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Definition
| Where the temporal cortex continues into the lateral sulcus, the transverse temporal gyri of Heschle receives this information. |
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Term
| Where do you find the Uncus and Parahippocampus cortex? What is there function? |
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Definition
On the ventral surface of the temporal lobe separated from the Occipitotemporal gyri by the collateral sulcus (supplied by the Posterior Cerebral Artery)
These areas comprise the Primary Olfactory Cortex! |
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Term
| What is the basic structure of the Basal Ganglia. |
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Definition
Consists of Caudate, Putamen and Globus pallidus.
1) Caudate begins as head in lateral wall of anterior lateral ventricle and then arches dorsally and laterally.
2) The Lenticular nucleus, consisting of the Putamen (lateral) and Globus Palladus (medial) lies underneath and within the Caudate. |
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Term
| What fiber system connects the thalamus and cerebral cortex? |
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Definition
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Term
| To what part of the cerebral cortex does the medial geniculate project? |
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Definition
Temporal Cortex (auditory information).
Remember, auditory reference center is found in transverse temporal gyrus |
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Term
| What structures of the mesencephalon are found beneath the Cerebral aqueduct? |
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Definition
Directly beneath, you find the tegmentum, containing the motor nuclei of CN III and IV (basal plate derivative).
Beneath the tegmentum lies the Cerebral peduncle, containing the Crus Cerebri running from the cerebral cortex to the brainstem. |
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Term
| Where do you find the olives? |
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Definition
| The olives are motor nuclei that relay information to the cerebellum and are located on the lateral surface of the medulla, lateral to the pyramids. |
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Term
Where do each of the following CNs arise from?
1) IX
2) X
3) XI
4) XII |
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Definition
1) IX and X arise from the brainstem immediately lateral to the olive (rostral bundles are IX and caudal bundles are X)
2) XI emerges from caudal medulla and from spinal cord at upper cervical levels, innervating the muscles of the larynx, as well as the ipsilateral SCM and trapezius.
3) XII emerges in the sulcus between the medullary pyramid and the inferior olive on the ventral medulla. |
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Term
| What does the foramen of Lushka open up into? |
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Definition
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Term
| Which veins drain the great vein of Galen? |
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Definition
| Internal Cerebral, Basal Veins of Rosenthal and Occipital Veins |
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Term
| What is the Cerebromedullary Cistern? |
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Definition
| Also called the "Cisterna Magna," this is the largest separation between the arachnoid and pia layers and is located at the base of the cerebellum and medulla. |
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Term
| Why are aneurisms of the internal carotid artery after it gives off the middle cerebral artery so dangerous? |
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Definition
Potential compression of the optic nerve and chiasm.
Remember, the anterior choroidal artery off of MCA supplies the optic tract, posterior inferior internal capsule, ventral putamen and globus palladus. |
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Term
| What large commisure is supplied by branches of the anterior communicating artery? |
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Definition
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Term
| Why is occlusion of the Posterior cerebral artery of such concern? |
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Definition
The Calcarine branch supplies vision to the contralateral half of the visual field.
The Oculomotor nerve rus between the Posterior cerebral and superior cerebellar arteries! |
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Term
| Where are Superior vs. Inferior Cerebral Veins drained? |
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Definition
Superior goes to Superior saggital sinus
Inferior goes to the Cavernous sinus. |
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Term
| What structure do the great cerebral vein of Galen and the inferior saggital sinus unite to form? |
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Definition
| Strait sinus, which joins the superior saggital sinus and transverse sinuses at the confluence of sinuses. |
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