Spock frequently addresses or refers to other characters by their first names ("Harry" instead of "Mister Mudd", "Cyrano Jones" instead of "Mister Jones", etc.). In Star Trek: The Original Series, he was established as preferring more formal modes of address.
Nurse Chapel's chest insignia is the standard oval-within-a-circle symbol for the Sciences division. However, in the live Star Trek: The Original Series, her uniform was unique in that she wore a red cross in place of that symbol.
Although some of the original sound effects from the original series are used, most are stock animation sounds. Most notably are the tricorders, McCoy's medical scanner and the phasers. The transporter sound used is from the very early episodes of the original series.rather then the high pitched trilling sound that later became standard for the series. Other sounds are missing entirely, such as the intercom whistle and the button tones.