Heart Valves Tour | Mitral to Tricuspid 💓 - - Take a smooth visual journey inside the human heart. In this short anatomy clip, the camera moves from the mitral valve to the tricuspid valve, revealing the delicate structure of the valves, chordae tendineae, and the inner walls of the heart. This view highlights how heart valves guide blood flow with precision, ensuring one-way movement and efficient cardiac function. A calm, detailed look inside the beating heart — designed for learning, clarity

On this day in 1973, we met Sarah Jane Smith and the Sontarans for the first time #DoctorWho

This is what a psych ward REALLY looks like

What happens if you get chemicals in your eyes?!

David Tennant is in the hot seat discussing 20 years of the Tenth Doctor in THE WHONIVERSE SHOW!