Online courses directory (4179)

Check out the flow of positive charge through the heart that happens every time your heart beats! Learn how the heart is able to keep a regular rate and rhythm throughout your life. Membrane Potentials - Part 1. Membrane Potentials - Part 2. Permeability and Membrane Potentials. Action Potentials in Pacemaker Cells. Action Potentials in Cardiac Myocytes. Reseting Cardiac Concentration Gradients. Electrical System of the Heart. Depolarization Waves Flowing through the Heart. A Race to Keep Pace!. Thinking about Heartbeats. New Perspective on the Heart.

Check out the flow of positive charge through the heart that happens every time your heart beats! Learn how the heart is able to keep a regular rate and rhythm throughout your life. Membrane Potentials - Part 1. Membrane Potentials - Part 2. Permeability and Membrane Potentials. Action Potentials in Pacemaker Cells. Action Potentials in Cardiac Myocytes. Reseting Cardiac Concentration Gradients. Electrical System of the Heart. Depolarization Waves Flowing through the Heart. A Race to Keep Pace!. Thinking about Heartbeats. New Perspective on the Heart. Membrane Potentials - Part 1. Membrane Potentials - Part 2. Permeability and Membrane Potentials. Action Potentials in Pacemaker Cells. Action Potentials in Cardiac Myocytes. Reseting Cardiac Concentration Gradients. Electrical System of the Heart. Depolarization Waves Flowing through the Heart. A Race to Keep Pace!. Thinking about Heartbeats. New Perspective on the Heart.

Find out what can cause a heart disease and stroke, and how the two are related!. Heart Disease and Heart Attacks. Thrombo-emboli and Thromboembolisms. Stenosis, ischemia and heart failure. Strokes. Heart Disease and Heart Attacks. Thrombo-emboli and Thromboembolisms. Stenosis, ischemia and heart failure. Strokes.

Find out more about heart muscles and what happens when they contract. Three Types of Muscle. Heart Cells Up Close!. Myosin and Actin. Tropomyosin and troponin and their role in regulating muscle contraction. Calcium Puts Myosin to Work. Sympathetic Nerves Affect Myosin Activity. Why Doesn't the Heart Rip?. Three Types of Muscle. Heart Cells Up Close!. Myosin and Actin. Tropomyosin and troponin and their role in regulating muscle contraction. Calcium Puts Myosin to Work. Sympathetic Nerves Affect Myosin Activity. Why Doesn't the Heart Rip?.

Learn all about hypertension: symptoms, diagnosis, and how lifestyle changes can make a difference!. What is hypertension?. Hypertension symptoms and categories. Hypertension effects on the blood vessels. Hypertension effects on the heart. 4 lifestyle changes to help manage hypertension. What is hypertension?. Hypertension symptoms and categories. Hypertension effects on the blood vessels. Hypertension effects on the heart. 4 lifestyle changes to help manage hypertension.

Most people have had the flu virus at least once in their lives, and it

Ever wonder about your lab values and what they mean? Lab values measure amounts of electrolytes or cells in your blood and occasionally tell you about how hormones and enzymes are working! Dive deeper and get a good understanding of concentrations as well!. Introduction to lab values and normal ranges. What's Inside of Blood?. Units for common medical lab values. What is an equivalent?. The mole and avogadro's number. Molarity vs. Molality. Molarity vs. Osmolarity. Calculate your own osmolarity. Molarity, Molality, Osmolarity, Osmolality, and Tonicity - What's the difference?. Tonicity - comparing 2 solutions. Introduction to lab values and normal ranges. What's Inside of Blood?. Units for common medical lab values. What is an equivalent?. The mole and avogadro's number. Molarity vs. Molality. Molarity vs. Osmolarity. Calculate your own osmolarity. Molarity, Molality, Osmolarity, Osmolality, and Tonicity - What's the difference?. Tonicity - comparing 2 solutions.

MCAT Video Competition. MCAT Video Competition Details. How to make a video. MCAT Video Competition. MCAT Video Competition Details. How to make a video.

Enjoy!. Bacterial Meningitis. Ritual of the Bedside Exam. Systemic Thinking About Cancer. Inflammation. Bacterial Meningitis. Ritual of the Bedside Exam. Systemic Thinking About Cancer. Inflammation.

Learn how the sympathetic and parasympathetic nerves regulate your heart in so many different ways!. Changing the AV Node Delay - Chronotropic Effect. Changing the Heart Rate - Chronotropic Effect. Increasing Ventricular Contractility - Inotropic effect. Autonomic Nervous System Effects on the Heart. Getting a New Heart. Changing the AV Node Delay - Chronotropic Effect. Changing the Heart Rate - Chronotropic Effect. Increasing Ventricular Contractility - Inotropic effect. Autonomic Nervous System Effects on the Heart. Getting a New Heart.

Find out exactly what preload and afterload mean, and why most of us use a handy shortcut to guess-timating what they are!. Why Doesn't the Heart Rip?. What is Preload?. Preload and Pressure. Preload Stretches out the Heart Cells. Frank-Starling Mechanism. Sarcomere length-tension relationship. Active contraction vs. passive recoil. What is afterload?. Increasing the Heart's Force of Contraction. Why Doesn't the Heart Rip?. What is Preload?. Preload and Pressure. Preload Stretches out the Heart Cells. Frank-Starling Mechanism. Sarcomere length-tension relationship. Active contraction vs. passive recoil. What is afterload?. Increasing the Heart's Force of Contraction.

Watch as the pressure and amount of blood inside the left ventricle go up and down within fractions of a second!. Pressure in the Left Heart - Part 1. Pressure in the Left Heart - Part 2. Pressure in the Left Heart - Part 3. Left Ventricular Pressure vs. Time. Left Ventricular Volume vs. Time. Drawing a Pressure-Volume Loop. Understanding the Pressure-Volume Loop. End Diastolic Pressure-Volume Relationship (EDPVR). End Systolic Pressure-Volume Relationship (ESPVR). Reimagine the Pressure Volume Relationship. What is Preload?. Why Doesn't the Heart Rip?. Pressure in the Left Heart - Part 1. Pressure in the Left Heart - Part 2. Pressure in the Left Heart - Part 3. Left Ventricular Pressure vs. Time. Left Ventricular Volume vs. Time. Drawing a Pressure-Volume Loop. Understanding the Pressure-Volume Loop. End Diastolic Pressure-Volume Relationship (EDPVR). End Systolic Pressure-Volume Relationship (ESPVR). Reimagine the Pressure Volume Relationship. What is Preload?. Why Doesn't the Heart Rip?.

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 these videos to learn more about how the heart works, blood flow in arteries and veins, and blood pressure. Meet the heart!. Layers of the Heart. Flow through the Heart. Two Circulations in the Body. Lub Dub. Heart Quiz. Circulatory System and the Heart. Arteries vs. Veins - What's the difference?. Layers of a blood vessel. Arteries, Arterioles, Venules, and Veins. Three Types of Capillaries. Pre-Capillary Sphincters. What is blood pressure?. Learn how a stethoscope can help determine blood pressure. Resistance in a tube. Adding up resistance in series and in parallel. Adding up resistance problem. Flow and Perfusion. Putting it all together: Pressure, flow, and resistance. Blood pressure changes over time. Regulation of blood pressure with baroreceptors. Parts of a nephron. General overview of the RAAS system - Cells and hormones. Renin production in the kidneys. Activating Angiotensin 2. Angiotensin 2 raises blood pressure. Aldosterone raises blood pressure and lowers potassium. Aldosterone removes acid from the blood. ADH secretion. ADH effects on blood pressure. Aldosterone and ADH. Meet the heart!. Layers of the Heart. Flow through the Heart. Two Circulations in the Body. Lub Dub. Heart Quiz. Circulatory System and the Heart. Arteries vs. Veins - What's the difference?. Layers of a blood vessel. Arteries, Arterioles, Venules, and Veins. Three Types of Capillaries. Pre-Capillary Sphincters. What is blood pressure?. Learn how a stethoscope can help determine blood pressure. Resistance in a tube. Adding up resistance in series and in parallel. Adding up resistance problem. Flow and Perfusion. Putting it all together: Pressure, flow, and resistance. Blood pressure changes over time. Regulation of blood pressure with baroreceptors. Parts of a nephron. General overview of the RAAS system - Cells and hormones. Renin production in the kidneys. Activating Angiotensin 2. Angiotensin 2 raises blood pressure. Aldosterone raises blood pressure and lowers potassium. Aldosterone removes acid from the blood. ADH secretion. ADH effects on blood pressure. Aldosterone and ADH.

Get a better understanding of how your lungs help you to sing and survive!. Meet the lungs. People and plants. The Bronchial Tree. Inhaling and Exhaling. How does Lung Volume Change?. The Lungs and Pulmonary System. Alveolar Gas Equation - Part 1. Alveolar Gas Equation - Part 2. O2 and CO2 solubility. Henry's law. Graham's Law of Diffusion. Fick's Law of Diffusion. Oxygen Movement from Alveoli to Capillaries. Peripheral Chemoreceptors. Central Chemoreceptors. The Respiratory Center. Sneeze, Cough, and Hiccup. Meet the lungs. People and plants. The Bronchial Tree. Inhaling and Exhaling. How does Lung Volume Change?. The Lungs and Pulmonary System. Alveolar Gas Equation - Part 1. Alveolar Gas Equation - Part 2. O2 and CO2 solubility. Henry's law. Graham's Law of Diffusion. Fick's Law of Diffusion. Oxygen Movement from Alveoli to Capillaries. Peripheral Chemoreceptors. Central Chemoreceptors. The Respiratory Center. Sneeze, Cough, and Hiccup.

An overview to the state of the art of interactive data visualization in healthcare. The course will cover data visualization principles, methods, and techniques.

The aim of healthcare policy is to ensure that people are taken care of when they are ill or injured. How healthcare is administered in different countries varies depending on the number and quality of hospitals, doctors and medical equipment available. Budgets for drug development and the role of insurance companies in paying and administering care for patients are also of importance. This free online course gives an overview of healthcare policy in the US and how its healthcare system is managed. This free healthcare course reviews costs in the US compared to Europe and how doctors are paid in the US. It also gives an overview of drugs costs, and explains the role of Blue Cross Blue Shield and how it was established. This course will be of interest to medical and healthcare professionals who would like to learn more about healthcare policies in the US, and to anyone who would like to know how the US healthcare system works. If you are interested in a career in healthcare, your boss or future employer might be very impressed that your knowledge extends not only from day-to-day healthcare but also to an overall policy level!<br />

This course goes over the new Affordable Care Act as well as gives suggestions on improvement from Dr. George Flinn.

Introduction to Behavioral Imaging, a new research field which encompasses the measurement, modeling, analysis, and visualization of behaviors from multi-modal sensor data. It is tailored for undergraduate and graduate students who are interested in this emerging field.

<p><strong></strong><span style="color: rgb(0, 0, 0);">This free online course is all about healthy living. It is intended to make you more aware of what you eat and drink. This course will show you how to exercise and create a balanced diet that can help you to stay fit and healthy. It will help you to follow a healthy lifestyle by choosing foods that are appropriate for you and this will help you to plan your exercise regime. It will also explain calories and food energy. It will make you think about the dangers of alcohol. This course will help you to understand food labels and help you put healthy eating into practice.</span><span style="font-weight: bold; color: rgb(255, 0, 0);"><br /></span></p> <p><span style="font-weight: bold; color: rgb(255, 0, 0);">Note</span>: This course has been optimised for Internet Explorer, some features may not function or display correctly in other Web browsers such as Firefox. </p> <p></p>

learn about desktop support or IT Support.