Cheers Trivia: Norm's favorite restaurant...?

Questions

This small gland attached to the brain exerts a control over growth?

This software company produced hits such as 'Pagemaker' & 'Illustrator'?

This South African surgeon led the team that performed the first human heart transplant in 1968?

This space station killed a cow on re entry into earth's atmosphere?

This sport allows substitutions without a stoppage in play?