Question

the brain requires a substantial blood supply. the vessels that deliver blood to the brain are the
dural sinuses.
facial arteries.
external carotid arteries.
internal carotid and vertebral arteries.
jugular veins.

Explanation:

• Dural sinuses are venous channels, not arteries delivering blood.
• Facial arteries supply the face, not the brain.
• External carotid arteries supply structures outside the skull.
• Jugular veins are for venous return, not arterial supply.
• The internal carotid and vertebral arteries are the main arteries that deliver blood to the brain.

Answer:

internal carotid and vertebral arteries.