Letter a in the Angiographic Image of the Aortic Arch

question 37

Multiple Choice

Letter A in the angiographic image of the aortic arch and its branches below is the _____ artery.

• A) innominate (brachiocephalic)
• B) R common carotid
• C) R subclavian
• D) R vertebral

---

Definitions:

Like Poles

Magnetic poles of the same kind (either both north or both south), which repel each other according to magnetic principles.

Electromagnet

A type of magnet where the magnetic field is produced by an electric current, typically through a wire wound into a coil around a magnetic core.

Magnetic Field

An invisible field around magnetic materials where magnetic forces are exerted and can be detected by other magnetic materials or moving electric charges.

North Magnetic Pole

The point on the Earth's surface where geomagnetic field lines are directed vertically downwards, the opposite of the Geographical North Pole.