Special muscles inside the inner lower chambers that contract and help open and
close valves are called:

1. chordae tendinae
2. pectinate muscles
3. papillary muscles
4. auricular muscles

Did you know that papillary muscles play a pivotal role in maintaining heart function? These conical-shaped muscles attach to the heart’s valves via chordae tendineae, preventing the valves from inverting during the contraction of the ventricles. They are like tiny guardians, ensuring that blood flows in the right direction through the heart chambers!

In real-world applications, the efficiency of papillary muscles is crucial for heart health. When these muscles weaken or malfunction, it can lead to valve prolapse or heart murmurs, potentially impacting overall cardiovascular health. Staying active and managing blood pressure can help keep these tiny muscle “guards” strong and ready to do their important job!