Online courses directory (264)

This course will explore the complex challenges of allocating scarce medical resources at both the micro and macro level. Students will learn the theories behind allocation and use modern examples to explore how society makes the difficult decisions that arise when there is not enough to go around.

In this course, students learn to recognize and to apply the basic concepts that govern integrated body function (as an intact organism) in the body's nine organ systems.

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.

Principles of Public Health introduces the major concepts and principles of public health and the determinants of health status in communities. Emphasizes the ecological model that focuses on the linkages and relationships among multiple natural and social determinants affecting health.

This course will examine the ethical, legal and social issues raised by neuroscience. Topics will include the implications of new knowledge of the brain for our understanding of selfhood, for the meaning of privacy, for the distinction between therapy and enhancement, and for national security.

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.

Each mammalian cell has the same genes, yet performs distinct functions. This is achieved by epigenetic control of gene expression; the switching on and switching off of genes. This course will cover the principles of epigenetic control of gene expression, how epigenetic control contributes to cellular differentiation and development, and how it goes wrong in disease.

Learn about how arteries differ from veins and how arteries can get damaged over time. Arteries vs. Veins - What's the difference?. Arteriosclerosis, Arteriolosclerosis, and Atherosclerosis. Atherosclerosis - Part 1. Atherosclerosis - Part 2. Arteriolosclerosis - Part 1. Arteriolosclerosis - Part 2. Arteries vs. Veins - What's the difference?. Arteriosclerosis, Arteriolosclerosis, and Atherosclerosis. Atherosclerosis - Part 1. Atherosclerosis - Part 2. Arteriolosclerosis - Part 1. Arteriolosclerosis - Part 2.

During this course, students will gain an understanding of the Disaster Cycle, concentrating on the Mitigation Phase. They will examine disaster planning on a personal level developing a disaster plan and examine Awareness and Attitude during disasters and daily life.

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.

This college-level course gives students a thorough understanding of gene function, and enables them to apply this understanding to real-world issues, both personal and societal. This is Part 1 of a two-part course; Part 2 focuses on the study of of how genes and traits are inherited.

Find out how the heart and circulatory system work in the fetus!. Meet the Placenta!. Umbilical vessels and the Ductus Venosus. Flow through the Heart. Hypoxic Pulmonary Vasoconstriction. Foramen Ovale and Ductus Arteriosus. Fetal Hemoglobin and Hematocrit. Double Bohr Effect. Fetal Circulation Right Before Birth. Baby Circulation Right After Birth. Fetal Structures in an Adult. Meet the Placenta!. Umbilical vessels and the Ductus Venosus. Flow through the Heart. Hypoxic Pulmonary Vasoconstriction. Foramen Ovale and Ductus Arteriosus. Fetal Hemoglobin and Hematocrit. Double Bohr Effect. Fetal Circulation Right Before Birth. Baby Circulation Right After Birth. Fetal Structures in an Adult.

Find out how preload, afterload, and contractility work together to change your PV Loop (and affect stroke volume and cardiac output)!. What is Preload?. What is afterload?. Increasing the Heart's Force of Contraction. Reimagine the Pressure Volume Relationship. What is Contractility?. Getting Ea (Arterial Elastance) from the PV Loop. Arterial Elastance (Ea) and Afterload. Arterial Elastance (Ea) and Preload. Stroke Work in PV Loops and Boxes. Contractility, Ea, and Preload Effects on PV Boxes. What is Preload?. What is afterload?. Increasing the Heart's Force of Contraction. Reimagine the Pressure Volume Relationship. What is Contractility?. Getting Ea (Arterial Elastance) from the PV Loop. Arterial Elastance (Ea) and Afterload. Arterial Elastance (Ea) and Preload. Stroke Work in PV Loops and Boxes. Contractility, Ea, and Preload Effects on PV Boxes.

This course covers the basics of normal nutrition for optimal health outcomes and evidence-based diets for a variety of diseases.

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.

The resources available to individuals and society and the prices of goods in the market shape our choices - even about the food we eat and the weight at which we live. This course explores the economic motivation for consumer choice and the economic role of government in markets related to obesity.

Learn about the wide range of contraceptive methods, and the public health implications related to access to information and choices about reproductive health.

This course will explore the process of evaluating investigational vaccines in clinical trials including informed consent, recruitment, enrollment, safety evaluation, and quality data collection.

This course will explore the many problems of the American health care system and discuss the specific ways that the Affordable Care Act will impact access, quality, costs, as well as medical innovation.

This course will discuss issues regarding vaccines and vaccine safety: the history, science, benefits, and risks of vaccines, together with the controversies and common questions surrounding vaccines, and an update on newly created vaccines and recent outbreaks of previously controlled diseases.