A single sixteenth note is made up of three parts: note head, stem, and
flag.
flag or beam.
The note head is the oval-shaped part of the note symbol that represents the duration or length of the note. In the case of a sixteenth note, the note head is filled in.
The stem is the vertical line attached to the note head, either pointing upwards or downwards depending on the position of the note on the staff. The stem helps indicate the pitch of the note.
The flag or beam is a line or lines attached to the stem of the note. In the case of a sixteenth note, it would typically have one flag attached to the stem. The flag helps indicate the rhythmic value or duration of the note.