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TikTokms.m.biochem
Understanding the Heart: Diagram, Structure, and Function Explained
Explore the fully labeled diagram and structure of the heart, including cardiac muscle, deoxygenated blood, valves, and more. Learn about the circulatory system and heart dissection with helpful tips for Leaving Cert Biology. #edutok #biology #leavingcert #chemistry #teacher Ms BioChem(@ms.m.biochem). original sound - Ms BioChem. The Heart🫀 ...
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Here's exactly what happens every time your heart beats 🫀 It starts with an electrical signal from the SA node — your heart's natural pacemaker. That signal tells your atria to contract, pushing blood down into the ventricles. Then the ventricles contract (ventricular systole): 🫀 Right ventricle → pumps deoxygenated blood to the lungs 🫀 Left ventricle → pumps oxygen-rich blood to the rest of your body After that, the heart enters diastole — a brief relaxation where the chambers refill and pre
0:06
Here's exactly what happens every time your heart beats 🫀 It starts with an electrical signal from the SA node — your heart's natural pacemaker. That signal tells your atria to contract, pushing blood down into the ventricles. Then the ventricles contract (ventricular systole): 🫀 Right ventricle → pumps deoxygenated blood to the lungs 🫀 Left ventricle → pumps oxygen-rich blood to the rest of your body After that, the heart enters diastole — a brief relaxation where the chambers refill and pre
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