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.
The Sinoatrial Node: The Body's Natural Pacemaker. In the upper part of the right atrium of the heart is a specialized bundle of neurons known as the sinoatrial node (SA node).Acting as the heart's natural pacemaker, the SA node fires at regular intervals to cause the heart of beat with a rhythmn of about 60 to 70 beats per minute for a healthy, resting heart.he Sinoatrial Node: The Body's Natural Pacemaker. In the upper part of the right atrium of the heart is a specialized bundle of neurons known as the sinoatrial node (SA node).