Choose the appropriate lettered structure in this angiogram of the cerebral vasculature and collateral circulations are discounted. Aneurysm of which artery causes a perichiasmal lesion that may cause nasal hemianopia?

Anatomy

Choose the appropriate lettered structure in this angiogram of the cerebral vasculature and collateral circulations are discounted. Aneurysm of which artery causes a perichiasmal lesion that may cause nasal hemianopia?

The action of digastric muscle is:

Which of the following vessels supply the anal canal?

All of the following muscles are elevators of the mandible EXCEPT: