Ukulele Festival Hawaii. This annual Waikiki festival honors Hawaii's beloved musical instrument. Photo: Tina Mahina. Photo: Tina Mahina. The ukulele is Hawaiiâs best-loved musical instrument, so it makes sense that Ukulele Festival Hawaii is the worldâs largest, attracting enthusiasts from as far away as Italy and Thailand.
atrioventricular (AV) valve, a valve in the heart through which blood flows from the atria to the ventricles. The valve between the left atrium and left ventricle is the mitral (bicuspid) valve; the right AV valve is the tricuspid valve. 1  Facebook. 2  Twitter.
Glossary of Terms. Atrioventricular (AV) Node. Also known as the Aschoff-Tawara node, the AV node is a group of specialized cardiac muscle fibers located at the center of the heart, in the floor of the right atrium, between the atria and ventricles.