Tag Archives: lungs

Very Educative : The respiratory center | Respiratory system physiology | NCLEX-RN | Khan Academy

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Very Educative : Sneeze, cough, and hiccup | Respiratory system physiology | NCLEX-RN | Khan Academy

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Very Educative : Extrapulmonary TB (part 1) | Infectious diseases | NCLEX-RN | Khan Academy

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Very Educative : Extrapulmonary TB (Part 2) | Infectious diseases | NCLEX-RN | Khan Academy

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Very Educative : Hemoglobin moves O2 and CO2

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Very Educative : Meet the lungs | Respiratory system physiology | NCLEX-RN | Khan Academy

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Very Educative : Fick’s law of diffusion | Respiratory system physiology | NCLEX-RN | Khan Academy

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Very Educative : Hypoxic Pulmonary Vasoconstriction

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Very Educative : Two Circulations in the Body | Circulatory system physiology | NCLEX-RN | Khan Academy

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Very Educative : Foramen Ovale and Ductus Arteriosus

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Very Educative : Flow through the Heart

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Very Educative : Layers of the Heart

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Meet the heart – Find out exactly where the heart rests in your body and what it does!

meet-your-heart

Your heart sits in the middle of your chest and pumps blood from about 4 weeks after conception until the day that you die. It never stops, and over your lifetime it will pump ~175 million liters of blood. To visualize that, imagine the amount of water that falls over Niagara falls in a few minutes. Remarkable! This little pump is the size of your clenched fist and in an adult can weigh about 300 grams. Watch […]

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Lub Dub – The Sound of Heart Beat

lub-dub-heart-beat-sound

Do you ever wonder why the heart sounds the way it does? Opening and closing of heart valves makes the heart rhythm come alive with its lub dub beats…   Heart sounds are the noises generated by the beating heart and the resultant flow of blood through it. Specifically, the sounds reflect the turbulence created when the heart valves snap shut. In cardiac auscultation, an examiner may use a stethoscope to listen for these unique and distinct […]

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