circle of willis anatomy mnemonics

The Circle of Willis is a vital part of the brain's vasculature. It connects the anterior and posterior blood supplies of the brain and ensures constant perfusion even if one segment is blocked or reduced. Here's a mnemonic to remember the components of the Circle of Willis:

**"Please Cool MAM, I'll Purchase Ashtang."**

**P** - Posterior communicating artery  

**C** - Cerebral (anterior, middle, and posterior cerebral arteries)  

**M** - Middle cerebral artery  

**A** - Anterior cerebral artery  

**M** - Mammillary bodies (not a part of the circle but a nearby landmark to help orient oneself)  

**I** - Internal carotid artery  

**P** - Posterior cerebral artery  

**A** - Anterior communicating artery  

It's also helpful to visualize the Circle of Willis while saying the mnemonic, as this can solidify the understanding of its anatomy. Always make sure to consult accurate anatomical diagrams when studying.