TheoryCT ARRT Practice Test Video
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Q1Which lobe of the brain is located in the most anterior portion of the cranium?
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✓ Correct answer: Frontal lobe
The frontal lobe occupies the anterior cranial fossa and is the most anteriorly positioned cerebral lobe, lying anterior to the central sulcus.
Q2The primary visual cortex is located in which lobe of the cerebrum?
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✓ Correct answer: Occipital lobe
The primary visual cortex (V1) resides in the occipital lobe, specifically along the calcarine sulcus, and processes visual input from the retinas.
Q3The third ventricle communicates with the lateral ventricles through which structure?
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✓ Correct answer: Foramen of Monro
The paired foramina of Monro (interventricular foramina) connect each lateral ventricle to the midline third ventricle, allowing CSF to flow between them.
Q4Which structure connects the third ventricle to the fourth ventricle?
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✓ Correct answer: Cerebral aqueduct of Sylvius
The cerebral aqueduct (aqueduct of Sylvius) is a narrow channel through the midbrain that connects the third and fourth ventricles.
Q5On axial CT the lentiform nucleus is separated from the caudate nucleus by which structure?
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✓ Correct answer: Internal capsule
The internal capsule is the white matter tract that separates the lentiform nucleus (putamen + globus pallidus) from the caudate nucleus and thalamus.
Q6The cerebellum is separated from the occipital lobes by which structure?
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✓ Correct answer: Tentorium cerebelli
The tentorium cerebelli is a dural fold that forms a tent-like partition separating the cerebellum (infratentorial) from the occipital lobes (supratentorial).
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