Tag: Sacral spine

The sacrum is a wedge-shaped bone at the base of your spine, and the first three sacral vertebrae fuse to form distinctive, wing-like structures called the alae (plural for ala). Understanding what is sacral ala offers key insights into the foundation of your spine and its vital connection to your pelvis.

According to cardiologists, the second heart sound, or S2, is a crucial component of a physical exam, signaling the closure of two important heart valves. In medical terms, however, S2 can also refer to a specific vertebra, making context vital for understanding its meaning.