cerebrovascular: anatomy

Where does the right common carotid artery originate?

• Directly off the arch

• Brachiocephalic artery

• Subclavian artery

• Vertebral artery

What percentage of CCA blood goes to the ICA?

• 50%

• 60%

• 70%

• 80%

The ECA gives off how many branches to feed the face, neck, and scalp?

• 8 branches

• 6 branches

• 10 branches

• 12 branches

What is the first branch of the ICA at the syphon?

• Superior thyroid artery

• Ophthalmic artery

• Basilar artery

• Subclavian artery

The vertebral arteries unite to form which artery?

• Basilar artery

• Carotid artery

• Subclavian artery

• Cerebral artery

What is the Circle of Willis?

• Intracranial pathway for collateral flow.

• A type of brain tumor.

• A part of the digestive system.

• A muscle in the leg.

What percentage of people have an incomplete Circle of Willis?

• 50%

• 30%

• 70%

• 90%

Which arteries supply the Circle of Willis?

• ICAs and basilar

• Vertebral and carotid

• Subclavian and aorta

• Pulmonary and coronary

What is the function of the Anterior communicating artery in the Circle of Willis?

• Connects Rt and Lt ACA

• Supplies blood to the cerebellum

• Drains blood from the brain

• Regulates blood pressure in the brain

What is the Periorbital circulation?

• Network of vessels near the eye connecting the external and internal systems.

• A type of eye infection.

• A muscle around the eye.

• A nerve connecting the eye to the brain.