IMO, and I could be wrong, but the drive from Minn/St Paul, other than the Mall of America in Minneapolis, has nothing of interest until you get to the Badlands, Custer STate Park, Crazy HOrse, Mt Rushmore area. Deadwood SD for a day and night, I found to be of interest.
Sinoatrial node is located at the junction of the superior vena cava with the right atrium.
* SA node (sinoatrial node) â known as the heartâs natural pacemaker. The impulse starts in a small bundle of specialized cells located in the right atrium. The electrical activity spreads through the walls of the atria and causes them to contract.