vital part

Cortical excitability is a vital part of brain function.

After Payne's death, his One Direction bandmates posted a series of poignant and heartfelt tributes to their "brother", who they remembered as "the most vital part" of the group.

The signing of forward Gabriel Pec has proved to be a vital part of the Galaxy’s transformation into an MLS Cup contender after an eight-win season.

As the implications dawn on many such families, there are warnings of lower investment, lower employment, lower growth and the potential takeover of a vital part of the economy by big, and often foreign, corporates.

Studying the evolutionary history in a horse's ancestry may soon become a vital part of equine breeding to protect the health and well-being of rare breeds; therefore, the researchers' new findings about the Y chromosome will have lasting impacts on the equine industry.