JACES students explore science through pig heart dissection
Published 5:12 pm Tuesday, March 31, 2026
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Science students Samuel Escandon, Mark Sargent, Leah Collins, Alysia Johnson and Chelsi Clem took part in an experiment in Ben Johnson’s class at James A. Cawood Elementary School.
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James A. Cawood science teacher Ben Johnson worked with students on a lab project at the school. Students identified key parts of the heart, including the atria, ventricles, valves and major blood vessels. They also traced the path of blood flow and observed differences in heart wall thickness to better understand how the heart functions.
James A. Cawood Elementary School students recently engaged in hands-on learning by dissecting pig hearts in the school’s science lab.
The activity was led by science teacher Ben Johnson, whose passion for experiential learning continues to inspire students to explore careers in science, particularly in the medical field.
Johnson also leads the school’s Medical Explorers program in partnership with Harlan ARH Hospital, where students are provided with a variety of opportunities focused on career awareness and real-world, hands-on experiences.
“Hands-on experiences like the pig heart dissection give students a deeper understanding of how the human body works,” said Johnson. “When they can see and touch real structures, the learning becomes meaningful and sticks with them.”
Pig heart dissection is a common and effective activity in middle school science, particularly in life science units focused on the human body. Because a pig’s heart is similar in size, structure, and function to a human heart, it serves as an excellent model for student learning.
During the lab, students identified key parts of the heart, including the atria, ventricles, valves, and major blood vessels. They also traced the path of blood flow and observed differences in heart wall thickness to better understand how the heart functions.
“Our students learn best by doing,” Johnson said. “Activities like dissections allow them to explore science in a way that textbooks simply can’t replicate.”
Johnson noted that hands-on labs like this not only reinforce classroom instruction but also help students develop important scientific skills such as observation, critical thinking, and inquiry.
Prior to the dissection, students were provided with clear expectations, safety instruction and guidance on showing respect for the specimen.
“The focus is always educational and age-appropriate,” Johnson said.
Johnson added that experiences like this are among his favorite parts of teaching.
“Science comes alive in the classroom when students are actively involved,” he said. “From sharks to pig hearts, these experiences spark curiosity and help students make real-world connections.”
Principal John Carter praised Johnson’s dedication to providing meaningful learning opportunities.
“Mr. Johnson has always utilized our science labs by allowing students hands-on opportunities—whether through dissecting, experimenting, or exploring medical procedures,” Carter said. “I’m proud of his initiative and commitment to giving our students experiences that many middle school students may not have.”
Students also shared their thoughts on the experience.
Eighth grade student Hailey Collins said, “It was a great opportunity to see things in person that we would normally only see in books.”
Sixth grader Mason Rhymer said the dissection did not bother him.
“I see that type of thing all the time,” said Rhymer, noting that his family members are avid hunters. “I’ve learned how it’s done and about the different parts of the heart, like where blood enters and exits and how the valves work.”
He also referenced recent medical advancements, noting that the first successful transplant of a genetically modified pig heart into a human took place in 2022 at the University of Maryland Medical Center, with the recipient surviving for about 60 days.
As part of the Medical Explorers program, students have also participated in visits to Harlan ARH Hospital, including the lab, morgue and emergency room, as well as Southeast Kentucky Community and Technical College health career facilities.