Magnetic Resonance Imaging (MRI) Practice Test

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Study for the Magnetic Resonance Imaging (MRI) Test. Utilize flashcards and multiple choice questions with detailed hints and explanations. Get thoroughly prepared for your MRI exam!

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Which structure runs the length of the falx cerebri?

Cerebral aqueduct
Superior sagittal sinus
Inferior sagittal sinus
Transverse sinus

The correct answer is: Superior sagittal sinus

The superior sagittal sinus is a significant vascular structure that runs along the length of the falx cerebri. The falx cerebri is a sickle-shaped fold of dura mater that separates the two cerebral hemispheres in the brain. The superior sagittal sinus is a large venous channel located within this fold, allowing for the drainage of venous blood from the brain. This sinus collects blood from superficial cerebral veins and is critical for venous drainage as it directs blood towards the confluence of sinuses. Its position along the top edge of the falx cerebri makes it an essential component in the understanding of cerebral venous anatomy and the overall architecture of the brain's protective structures. The other options do not run along the length of the falx cerebri: the cerebral aqueduct is part of the ventricular system, the inferior sagittal sinus also runs along but at the lower edge of the falx cerebri, and the transverse sinus is located posteriorly rather than running throughout the length of the falx. Therefore, the superior sagittal sinus is the correct structure associated with the falx cerebri.