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The heart is the most symbolic organ of the human body. Across history, it has been seen as the source of emotions and the center of human existence. However, by the seventeenth century, scientific understanding overturned historical ideas, and the heart was recognized merely as a mechanical pump. More recently, Professor David Paterson from the University of Oxford has been doing extensive research that challenges this view. He has discovered that the heart has millions of specialized neurons just like those that are in the brain. Neurons are the cells that give humans the ability to think. So what does their presence in the heart mean?
Students receive a crash course in the physiology and functioning of their hearts as well as how to keep their hearts healthy. Animations clarify how the heart works to provide oxygen and nutrients to all the tissues and organs of the body. They also detail what can go wrong. The program stresses that even teenagers can show early signs of atherosclerosis and other heart problems. Two cardiologists and a dietitian then pinpoint the main risk factors for an unhealthy heart, including: smoking, abnormal levels of cholesterol, high blood pressure, obesity, diabetes, and physical inactivity.
Demonstrates how a heart actually functions as two pumps in one. Scenes at an amusement park show the effects of activity on the heart. Scenes of the internal heart are matched with still drawings and animations that depict the heart's valves, muscle, and pacemaker. The effects of diet and exercise on the heart are mentioned.
The heart is a pump, moving blood throughout the body via arteries and veins. Uses graphics to clarify the circulatory system and its functions. Notes the effects of exercise, nutrition, smoking, and infections on this system, and briefly illustrates coagulation, nosebleeds, and vaccinations.
Most people see a vegetable when they see a spinach leaf, but in this lab, they see the potential to create heart tissue. Students at Worcester Polytechnic Institute are training to be leaders in bioengineering, and they are thinking outside the box to develop practical, commercially viable technologies that fulfill critical unmet needs. Part of the "Science Nation" series.
Imagine if there were electronics able to prevent epileptic seizures before they happen, or electronics that could be placed on the surface of a beating heart to monitor its functions. The problem is that such devices are a tough fit. Body tissue is soft and pliable while conventional circuits can be hard and brittle--at least until now. Materials scientist John Rogers at the University of Illinois Urbana-Champaign is working to develop elastic electronics.
The habitats of several jungle animals are severely threatened. Organizations are working with local inhabitants to develop conservation models that ensure the jaguar, the scarlet macaw, the Howler monkey, and other species will continue to have a place to call home. Part of the "Bios: Nature and Society" series.
Part of the "The Biology Classics" series. Daphnia are small, planktonic crustaceans. Provides a classic study in arthropod behavior and anatomy. Examines the eye, brain, jaws, intestine, legs (with gills), and heart. Identifies two kinds of eggs: those that hatch directly into female daphnia and resistant eggs that carry the species through periods of freezing and drying.
Shows the human body systems: lungs, heart, and skeleton. Demonstrates the structures of the lungs, heart, and arteries and veins. Explains exchange of gas in the lungs, ventilation of the lungs, and how the heart works as a pump. Also discusses the role of the skeleton in providing support, protection, and anchorage for muscles, the importance of bone marrow, and the importance of calcium in giving strength to bones.
Follows the journey of a red blood cell around the circulatory system to demonstrate the efficient and elegant design of oxygen and food delivery to all parts of the body and the removal of wastes before they can do harm. Shows how the veins and arteries are structured to perform their tasks: muscular arteries to transmit the force of the heartbeat, veins with valves to insure the blood's return to the heart.
Discusses the importance of monitoring the cardiovascular system and explains the process of respiration in the body. Animations demonstrate how the organs in the heart work to pump blood throughout the body. Other terminology includes: blood vessel, artery, pulse, vein, aorta, septum, atrium, ventricle, capillaries, pulmonary circulation, systemic circulation, coronary circulation, blood pressure, sphygmomanometer, plasma, red blood cells, white blood cells, platelet, lungs, and alveoli.
Special attention is given to the healthy maintenance of growing bodies. Concepts and terminology discussed include: body systems, cells, tissues, organs, health, and body needs.
What physiological changes happen as animals hibernate? During hibernation, animals lower their metabolism including respiration, heart rate, and temperature in order to conserve energy. This episode shows the relationship between regulating life-sustaining functions and maintaining homeostasis. Part of the "Seasonal Science" series.
Features a veterinarian who provides lifesaving information by giving a thorough step-by-step demonstration of CPR on dogs. Includes definition of cardiopulmonary arrest, assessment of the dog, preparing the dog for CPR, and causes of cardiac arrest.
Explores the major characteristics of the skeletal and muscular systems. Discusses the number of bones in the human body, describes their different shapes and sizes, and illustrates how bones need muscles to move. Talks about different kinds of joints, and gives examples of how we use joints everyday.
Physical activity and quality sleep are both vital for healthy bodies, as well as healthy brains. Viewers learn the relationship between activity, boredom, and sleep and how each plays a role in healthy development of children. Part of "The Brain" series.
Host Dylan Dreyer ventures to the heart of Africa for a spectacle few humans have ever seen. She captures footage of the great herds of Africa as they travel more than 500 miles across the Serengeti plains. Part of the "Journey With Dylan Dreyer" series.
A hurricane hunter is a pilot that flies an airplane into the middle of a hurricane. They gather data on temperature, humidity, and air pressure. This data is critical for forecasting the intensity and path of hurricanes. Part of the "NOAA Ocean Today" series.
What are asteroids? Where are they? Are they dangerous to us? Explores this space body, its place in the solar system, and its potential threat to life on Earth. Discusses the LINEAR Project, which identifies and maps asteroids. Notes that meteorites are pieces of asteroids, and shows where both have hit Earth.
The nutrition label on packaged food has undergone some changes. The FDA designed the new label to reflect new scientific information, including the link between diet and chronic diseases such as obesity and heart disease. The new label has been simplified for the consumer and modernized based on current nutrition science.
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Collection of anatomy resources
A collection containing 21 resources, curated by Benetech
Biology related concepts
A collection containing 59 resources, curated by Benetech
A collection of Chemistry related resources
A collection containing 67 resources, curated by Benetech