Answer:
The two passageways in the floor of the skull for major blood vessels that serve the brain are ( a ) Jugular formen ( b ) Carotid Canal
Explanation:
The two passage ways on the floor of the skull for major blood vessels that serve the brain are jugular foramen this foramen is for the passage of the cranial nerves and jugular vein which drains blood from blood and carotid canal by which internal carotid artery delivers oxygenated blood to brain .
A ) JUGULAR FORAMEN :- passageway for cranial nerves & jugular vein, which drains blood from brain.
B ) CAROTID CANAL :- internal carotid artery delivers oxygenated blood to brain.
