Vertebrobasilar insufficiency is a condition characterized by poor blood flow to the posterior (back) portion of the brain, which is fed by two vertebral arteries that join to become the basilar artery. Blockage of these arteries occurs over time through a process called atherosclerosis, or the build-up of plaque.
No, Portugal is not a Mediterranean country. It does, however, have a mediterranean climate, but it is not considered a mediterranean country because the south does not have the Mediterranean Sea as a coast.
The bodies of water that border France are the Mediterranean Sea to the southeast, the Bay of Biscay to the west and the English Channel to the northwest. When including overseas territories, France also shares a border with Suriname, the Netherlands and Brazil. The shortest border is between France and Monaco and is 2.73 miles long. The longest border of continental France is with Spain, measuring a little over 387 miles long. Learn more about France.