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 is involved in this process and can increase heart rate by 10% to 15%. This reflex helps to prevent sequestration of blood in veins, atria, and pulmonary circulation. Antidiuretic hormone secretion from the posterior pituitary gland is decreased, resulting in decreased circulating volume.