Online courses directory (264)

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.

This course is intended to provide students with the fundamentals of fencing, including footwork, bladework, bouting and refereeing. It will allow students to develop the ability to analyze a fencing bout, and promotes creativity in applying acquired skills in a fencing bout.

This 12 session course is designed for the beginning or novice weight lifter, or for those who have experience lifting but lack proper instruction. We will provide an understanding of the biomechanics involved, muscles used for a given exercise, and program development.

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.

This Physical Education (PE or Phys Ed) course offers a comprehensive introduction to the topic and investigates the basics: from muscle response to the physiology, biology, and the science of sports. It covers the scientific basis of fitness and concludes with training principals and methods. It is an ideal course for those studying for a qualification in health or fitness or for sports enthusiasts. It is also an excellent resource for trainers or managers in fitness, health or sports related activities. <br />

Alcohol is enjoyed by many people during social occasions, but for others addiction to alcohol or alcohol-related illnesses can be a serious health issue. This free online course begins by reviewing the biological effects of alcohol on the body, including hangovers, psychological, and physical disturbances. The course also looks at the effects of chronic alcoholism such as liver damage or fetal alcohol syndrome. Finally, the course reviews some of the treatments for alcohol-related illnesses. This course is ideal for anyone who wants to learn more about the effects alcohol can have on their health, or for learners already working in the areas of health promotion or health awareness who want to further their knowledge and understanding of the health effects of excess alcohol consumption.

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.

Introduction to the linguistic study of language pathology, concentrating on experimental approaches and theoretical explanations. Discussion of Specific Language Impairment, autism, Down syndrome, Williams syndrome, normal aging, Parkinson's disease, Alzheimer's disease, hemispherectomy and aphasia. Focuses on the comparison of linguistic abilities among these syndromes, while drawing clear comparisons with first and second language acquisition. Topics include the lexicon, morphology, syntax, semantics and pragmatics. Relates the lost linguistic abilities in these syndromes to properties of the brain.

Course on dental materials, including gold alloys, composites, amalgams, glass ionomers, ceramics, waxes, etc. for operative dentistry, fixed and removable prosthodontics. This Work, Cariology, Restorative Sciences, and Endodontics (CRSE) Materials, by Stephen Bayne is licensed under a Creative Commons Attribution license.

The purpose of this sequence is to teach the aspects of basic science related to the respiratory system, building on the anatomy, physiology, and biochemistry taught in year 1. Clinical examples of applied basic science are based on common lung diseases including: pneumonia, emphysema, asthma, cancer, trauma, ARDS, and respiratory diseases of the newborn. Level: Second Year Medical Students Unless otherwise noted this Work, Respiratory, by The Regents of the University of Michigan is licensed under a Creative Commons Attribution license.

This sequence provides a comprehensive physiologic and pathologic overview of male and female reproduction, including normal human sexuality, normal human reproduction, abnormalities of sexual function, evaluation and management of infertility, parturition, and fertility control. Breast function and breast disease are also addressed. Level: Second Year Medical Students Unless otherwise noted this Work, Reproduction, by The Regents of the University of Michigan is licensed under a Creative Commons Attribution license.

This course provides an exciting, eye-opening, and thoroughly useful inquiry into what it takes to live an extraordinary life, on your own terms. The instructors address what it takes to succeed, to be proud of your life, and to be happy in it. Participants tackle career satisfaction, money, body, vices, and relationship to themselves. They learn how to confront issues in their lives, how to live life, and how to learn from it.

A short version of this course meets during the Independent Activities Period (IAP), which is a special 4-week term at MIT that runs from the first week of January until the end of the month. Then this semester-long extension of the IAP course is taught to interested members of the MIT community. This not-for-credit course is sponsored by the Department of Science, Technology, and Society. A similar, semester-long version of this course is taught in the Sloan Fellows Program.

Acknowledgment

The instructors would like to thank Prof. David Mindell for his sponsorship of this course, his hopes for its continued expansion, and his commitment to the well-being of MIT students.

For all of the bodies attached to the many great minds that walk the Institute's halls, in the work that goes on at MIT the body is present as an object of study, but is all but unrecognized as an important dimension of our intelligence and experience. Yet the body is the basis of our experience in the world; it is the very foundation on which cognitive intelligence is built. Using the MIT gymnastics gym as our laboratory, the Physical Intelligence activity will take an innovative, hands-on approach to explore the kinesthetic intelligence of the body as applicable to a wide range of disciplines. Via exercises, activities, readings and discussions designed to excavate our physical experience, we will not only develop balance, agility, flexibility and strength, but a deep appreciation for the inherent unity of mind and body that suggests physical intelligence as a powerful complement to cognitive intelligence.

The purpose of this class is to tell you something about our Tech Dinghy and how to sail it. This OCW site is arranged as a series of skills, explained both with lecture notes and videos. Please do not think of these skill checks as tests, but instead, as measures of your understanding of our sport. We don't expect perfection from our beginners, but only that our members be able to safely handle the boats and themselves on the Charles. For those who wish it, there will be much more that can be learned about other boats and other waters, but what can be learned here will provide the basis to build on. For more detail, a text on sailing the Tech Dinghy is provided in the readings section.

This course will thoroughly educate the successful student with the knowledge and skills necessary to be a certified beginning SCUBA diver. The prerequisite for the course is passing the MIT SCUBA swim test and demonstrating a "comfort level" in the water. At the end of the class, students will attempt to pass the certification exam to become certified divers. The class is taught in two parts each week: a classroom session and a pool session. The classroom sessions along with the reading material will provide the student with the knowledge necessary to pass the written exam. At the pool, the water skills are taught in progressions that build on the previous skills, making the difficult skills seem easy.

This sequence introduces students to clinical psychiatry. The sequence focuses on the clinical diagnosis and treatment of psychiatric disorders, with those elements of neurobiology, behavioral science, and pharmacology that are essential to the understanding of these disorders. Level: Second Year Medical Students Unless otherwise noted this Work, Psychiatry, by Michael D. Jibson is licensed under a Creative Commons Attribution-ShareAlike license.

This course sequence teaches the pathophysiology of common diseases of the nervous system (including visual, auditory, and vestibular systems), and the general principles underlying diagnosis and management. The specific goals are: To review clinically relevant neuroanatomy and neurophysiology. To learn a systematic approach to the localization of neurologic lesions. To learn a systematic approach for determining the likely general category of disease process responsible for a patient