Khan Academy
Khan Academy: Pressure Volume Loops: Re Imagine the Pressure Volume Relationship
Understand what is happening at the cellular level to cause two identical left ventricular volumes to have such different pressures! Rishi is a pediatric infectious disease physician and works at Khan Academy.
Khan Academy
Khan Academy: Heart Introduction: Layers of the Heart
Take a closer look at the heart, explore some of its interesting features and get to know the three layers that make up the heart. Rishi is a pediatric infectious disease physician and works at Khan Academy.
Khan Academy
Khan Academy: Heart Muscle Contraction: Three Types of Muscle
Find out what makes smooth muscle, cardiac muscle, and skeletal muscle similar and different from one another. Rishi is a pediatric infectious disease physician and works at Khan Academy.
Khan Academy
Khan Academy: Tuberculosis: Extrapulmonary Tb (Part 2 of 2)
Learn about how TB can spread beyond your lungs.
Khan Academy
Khan Academy: Gas Exchange: Fick's Law of Diffusion
Learn all of the different ways to maximize the amount of particles that diffuse over a short distance over time.
Khan Academy
Khan Academy: Fetal Circulation: Foramen Ovale and Ductus Arteriosus
Watch how the fetal heart allows blood to simply bypass the lungs altogether using the Foramen Ovale and the Ductus Arteriosus! Rishi is a pediatric infectious disease physician and works at Khan Academy.
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Khan Academy: Colon Disease: Colon Dysplasia
Dr. Andy Connolly shows Sal what cancerous colon tissue looks like.
Khan Academy
Khan Academy: Changing the Av Node Delay Chronotropic Effect
Find out exactly how your autonomic nervous system has a chronotropic effect (i.e. timing) that changes the delay between the contraction of the atria and the ventricles! Rishi is a pediatric infectious disease physician and works at...
Khan Academy
Khan Academy: Miscellaneous: Bacterial Meningitis
Dr. Charles Prober discusses prudent prescribing of antibiotics in the context of bacterial meningitis with 4th year medical student Morgan Theis.
Khan Academy
Khan Academy: Pressure Volume Loops: Why Doesn't the Heart Rip?
Understand LaPlace's law to see the effect that pressure, radius, and wall thickness each have on the "wall stress" in the left ventricle to answer the question of why the heart never gets a rip or tear. Rishi is a pediatric infectious...
Khan Academy
Khan Academy: Depolarization Waves Flowing Through the Heart
Get a clearer idea of what a "Depolarization Wave" means and how it goes from cell to cell through the entire heart! Rishi is a pediatric infectious disease physician and works at Khan Academy. [11:44]
Khan Academy
Khan Academy: Preload and Afterload: Preload Stretches Out the Heart Cells
Find out why stretching a heart cell in diastole affects how forcefully it contracts in systole. Rishi is a pediatric infectious disease physician and works at Khan Academy. [12:41]
Khan Academy
Khan Academy: Fetal Circulation: Hypoxic Pulmonary Vasoconstriction
Watch how blood gets diverted away from alveoli with low oxygen levels. Rishi is a pediatric infectious disease physician and works at Khan Academy. [9:13]
Khan Academy
Khan Academy: Fetal Circulation: Double Bohr Effect
Learn how there are two distinct Bohr effects happening at the same time in the placenta. Rishi is a pediatric infectious disease physician and works at Khan Academy. [10:34]
Khan Academy
Khan Academy: Fetal Circulation: Fetal Hemoglobin and Hematocrit
Although mom controls the oxygen source, the fetus has a couple of clever tricks to get the most oxygen possible! Rishi is a pediatric infectious disease physician and works at Khan Academy. [14:32]
Khan Academy
Khan Academy: Pressure Volume Loops: Left Ventricular Pressure vs. Time
Ever wonder exactly how the left ventricle's pressure changes over time? Find out in this color-coded video! Rishi is a pediatric infectious disease physician and works at Khan Academy. [10:51]
Khan Academy
Khan Academy: Tuberculosis: Pulmonary Tb
Learn the effects that TB has on the lungs and some important clinical clues. [12:18]
Khan Academy
Khan Academy: Growth and Metabolism: Digesting Food
Get an overview of three of the key macromolecules of life (proteins, fats, and carbohydrates), and how they get digested and absorbed.
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Khan Academy: Lab Values and Concentrations: Tonicity: Comparing Two Solutions
Find out how tonicity is determined by ions that don't move across membranes and how it affects the movement of water. Rishi is a pediatric infectious disease physician and works at Khan Academy. [11:02]
Khan Academy
Khan Academy: Heart Muscle Contraction: Calcium Puts Myosin to Work
See exactly how calcium binds troponin-C and allows myosin to do some work. Rishi is a pediatric infectious disease physician and works at Khan Academy. [10:03]
Khan Academy
Khan Academy: Flu Symptoms: What Is the Flu?
Learn the difference between the cold and the flu, and how we sometimes can get fooled by viruses. Rishi is a pediatric infectious disease physician and works at Khan Academy. [12:46]
Khan Academy
Khan Academy: Tuberculosis: What Is Tb?
Find out the basics of TB, where it comes from and where it goes. Rishi is a pediatric infectious disease physician and works at Khan Academy. [12:27]
Khan Academy
Khan Academy: Fetal Circulation: Umbilical Vessels and the Ductus Venosus
Watch as fetal blood goes through umbilical vessels and takes a shortcut through the Ductus Venosus to make it back to the heart. Rishi is a pediatric infectious disease physician and works at Khan Academy. [12:43]
Khan Academy
Khan Academy: Endocrinology and Diabetes: Precocious Puberty
At Stanford Medical School with Morgan Theis talking to Dr. Laura Bachrach about precocious puberty. [10:28]