Hot Topic is kinda weird with their sizing and I've never tried Spencers. Bodyartforms.com and piercedfish.com are pretty good for online buying. You can also try local piercing shops if you don't want to or cant buy online.
Whatever you want. Horseshoes are most commonly worn. Captive ball rings, segment rings, seamless rings, septum bullets, barbells, or crescents can be worn in a septum piercing.
It is called the interventricular septum.
The Nasal Septum
the septum divides the teo ventricles of the heart.
septum
The Atrial septum The wall between the two atriums is called the septum. Septum Cardiac Septum Atrial septum, containing the foramen ovale. Actually its called the interatrial septum...
Interventricular septum
This question is asking about the overall makeup of the heart and its structures which refer to its "skeleton":It consists of rings of connective tissue that surrounds the pulmonary trunk and aorta at their proximal ends. It provides firm attachments for heart valves and muscle fibers.
septum of the heart divides heart into right and left, that portion of the septum between right and left atria is called (interatrial) septum, while the portion of septum between right and left ventricles is called (interventricular) septum.
Injudicious cauterization of both sides of the septum causes a perforated septum when death of nose tissue occurs.
A septum ring is nothing more than a captive bead ring in a septum piercing.
A perforated septum is not serious.