Sinus sagittalis superior

The video tutorial explains the anatomy and function of brain sinuses, focusing on the superior sagittal sinus. Brain sinuses are venous channels that drain blood from the brain, skin, and eye cavity into the internal jugular vein. Unlike peripheral veins, brain sinuses lack vein flaps, allowing bidirectional blood flow. The superior sagittal sinus, one of the unpaired sinuses, is located in the fissura longitudinalis and runs along the cranial dome. It receives blood from superficial veins and cerebrospinal fluid from arachnoid villi, ultimately draining into the cardiovascular system.

What is a unique feature of brain sinuses compared to peripheral veins?

• They have vein flaps.

• They are located outside the skull.

• They are accompanied by arteries.

• They allow blood flow in both directions.

Where is the superior sagittal sinus located?

• In the cerebellum

• In the temporal lobe

• In the occipital lobe

• In the fissura Longitudinalis Siri

Which sinuses open into the confluence of sinuses?

• Superior sagittal sinus, occipital sinus, transversus sinus, and rectus sinus

• Superior sagittal sinus, inferior sagittal sinus, transversus sinus, and rectus sinus

• Superior sagittal sinus, occipital sinus, inferior sagittal sinus, and rectus sinus

• Inferior sagittal sinus, occipital sinus, transversus sinus, and rectus sinus

What is the function of arachnoid villi?

• To supply blood to the brain

• To produce cerebrospinal fluid

• To resorb cerebrospinal fluid

• To protect the brain from injury

Into which structure does the cerebrospinal fluid ultimately flow?

• The external jugular vein

• The cardiovascular system via the internal jugular vein

• The superior sagittal sinus

• The inferior sagittal sinus