arteriovenous anastomosis

https://doi.org/10.1351/goldbook.11609
Communication between an artery and a vein by collateral channels.
Note: As the connection is generally between arterioles and venules, the term arteriolovenular anastomosis is preferred.
Source:
PAC, 2015, 87, 841. (IUPAC Glossary of terms used in neurotoxicology (IUPAC Recommendations 2015)) on page 849 [Terms] [Paper]