Khan Academy on a Stick
Human biology
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The Lungs and Pulmonary System
ccThe pulmonary system including the lungs, larynx, trachea, bronchi, bronchioles, alveoli and thoracic diaphragm
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Red blood cells
ccOxygen uptake by hemoglobin in red blood cells
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Circulatory System and the Heart
ccIntroduction to the circulatory system and the heart
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Hemoglobin
ccHemoglobin and its role in the circulatory system
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Anatomy of a Neuron
ccIntroduction to the neuron and its anatomy
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Sodium Potassium Pump
ccHow a sodium potassium pump can maintain a voltage gradient across a cell or neuron's membrane
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Correction to Sodium and Potassium Pump Video
ccCorrection to Sodium and Potassium Pump Video
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Electrotonic and Action Potentials
ccHow electrotonic and action potentials propagate down cells
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Saltatory Conduction in Neurons
ccSaltatory conduction or how neurons use both electrotonic and action potentials to have signals move quickly while not losing strength.
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Neuronal Synapses (Chemical)
ccHow one neuron can stimulate (or inhibit) another neuron at a chemical synapse
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Myosin and Actin
ccHow myosin and actin interact to produce mechanical force.
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Tropomyosin and troponin and their role in regulating muscle contraction
ccTropomyosin and troponin and their role in regulating muscle contraction. How calcium ion concentration dictates whether a muscle is contracting or not.
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Role of the Sarcoplasmic Reticulum in Muscle Cells
ccThe role of the sarcoplasmic reticulum in controlling calcium ion concentrations within the muscle cell
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Anatomy of a muscle cell
ccUnderstanding the structure of a muscle cell
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The Kidney and Nephron
ccOverview of how the nephrons in the kidney filter blood and reabsorb water and other molecules.
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Secondary Active Transport in the Nephron
ccSecondary Active Transport in the Nephron