Tag: SA Node

  • How Well Do You Know Your Heart?

    February is National Heart Awareness Month! The basics, “Heart 411”: Heart + Blood  + Blood Vessels = Cardiovascular System + Trachea + Bronchi + Alveoli + Lungs = Respiratory System = Cardiorespiratory System: How the body provides oxygen and nutrients to its tissues and removes CO2. Main Structural Components:  Atria, Ventricles, SA Node, AV Node […]