Huitt then showed the students another sheep heart that had been sliced into cross-sections to give a more detailed view. She demonstrated how blood flow in the coronary arteries can become blocked, preventing delivery of oxygen to tissue, which becomes damaged, causing a heart attack. She also showed how the arteries can be unblocked with a stent or bypass surgery.

Phelan performed a live ultrasound on a medical student, allowing participants to watch inner movements of the heart on a screen as he explained what the video was demonstrating. He later moved on to 3-D reconstructions from CT scans of bodies of people with cardiovascular issues, explaining what the images showed, including procedures performed and the likely cause of death. The bodies were donated to science.

Edward Yeh, M.D., a renowned cardiologist and chair of the UAMS Department of Internal Medicine who holds the Nolan Family Distinguished Chair in Internal Medicine, also joined in the Zoom conference and demonstrated with images how clinicians use an electrocardiogram.

“By using an actual stethoscope, you can actually learn quite a bit,” he said.

Tammy Quick, the AHA’s Heart Ball director who organized the event for the association, presented questions on behalf of a handful of students who wanted more details, with Phelan and Yeh supplying the answers. Quick said later that she has attended workshops about the heart with many groups of Sweethearts over the years, but continues to learn something new in each one.