What are the two pairs of arteries arising from the internal carotid artery?

to supply the brain with blood/oxygen

middle cerebral artery = from its origin, it runs laterally to enter the lateral fissure anterior cerebral artery = from its origin, it runs medially and forward to enter the longitudinal fissure

A clog in a carotid artery is called a stroke.

The radial and ulnar arteries branch off from the brachial (axillary) artery below the elbow.

common carotid artery is an artery that supplies the head and neck with oxygenated blood; it divides in the neck to form the external and internal carotid arteries