Natalie Thornton

Where Are S1 and S2 Heard Equally?

When Do the AV Valves Open and Close?

What Do Coronary Veins Do for the Heart?

Does Elevating Legs Increase Heart Rate?

What Is an Infarct? How Blockages Cause Tissue Death

Which Heart Sound Is Louder and Longer?

What Is the Most Important Force in Venous Flow?

Do Venules Have Valves? A Look at Blood Flow

What Is Afterload? The Heart’s Resistance Explained

What Causes Active Hyperemia?

Do Arteries Grow Back? How the Body Repairs Blood Vessels

What Is the First Heart Sound and What Causes It?

What Is Pulmonary Circulation and How Does It Work?

How Systolic Blood Pressure Works

What Is the Renal Artery and What Does It Do?

How to Record Your Heartbeat: Methods and Devices

What Are the Long-Term Effects of Exercise on the Vascular System?

Do Blood Vessels Constrict During Exercise?

What Is the External Layer of the Heart?

What Are the 14 Steps of Blood Flow Through the Heart?