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The body is like a self-supporting hospital, able to deal with its own with wounds, bacterial invasions, fractures, and obstructions to its various passages. Follows the sequence of events over seconds and weeks when skin or bone is damaged, and shows the defensive reactions of blood clotting, fever, and mending of bone fractures.
(Source: DCMP)
Most people view antibiotics as miracle drugs. They can get rid of a whole range of infections. But because they are prescribed for so many different ailments, they are easy to overuse. The medical community is now at a crisis point because many of them simply don’t work anymore. Scientists are hunting urgently for new antibiotics--a challenge that is taking them to some remote and unusual places.
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.
David Ray never turns his back on his research, and with good reason. Ray and his team study alligators, crocodiles, and bats. With support from the National Science Foundation, this multidisciplinary team from several universities is mapping crocodile and alligator genomes. Reptiles resembling these have existed for around 80 million years and they are among the first reptiles to have their DNA sequenced. The research will expand knowledge beyond crocodilians to other reptiles, birds, and even dinosaurs.
Every cell in the body is a specific size. Host Trace Dominquez discusses some new scientific findings related to cell growth. A team of biologists has zeroed in on a previously unknown mechanism within the cell growth cycle that controls cell size. They made this fundamental finding by studying yeast cells, but it could provide insight to basic human biology. Part of the "Uno Dos of Trace" series.
With every breath you take, the process of respiration is supplying cells in the body with oxygen they need to carry out important processes. This program highlights the major structures and functions of the respiratory system. Concepts and terminology include: nasal passage, pharynx, larynx, lungs, diaphragm, trachea, bronchial tubes, alveoli, gas exchange, pulmonary circulation, inhalation, exhalation, hemoglobin, asthma, bronchitis, smoking, lung cancer, and pneumonia.
What happens to the body during sleep? Explores the mystery of REM sleep, shows a computer display of the waves that sweep across the brain during sleep, and presents extraordinary footage of a cat "acting out" its dreams. The analogy of comparing sleep to a ship on automatic pilot graphically illustrates how some functions must and do continue while the conscious brain is asleep.
Military combat, cancer and accidents – all can cause devastating nerve injuries. Sometimes, the body heals on its own. With support from the National Science Foundation, biomedical engineer Christine Schmidt and her team are working to restore nerve function when injuries are more complicated. Surgeons can sometimes move a nerve from one part of a patient’s body to another. Schmidt has developed a method that grafts cadaver tissue onto the damaged area to act as a scaffold for nerves to re-grow themselves.
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.
After the “Hola” song, Señora Alicia and Susana review the colors "green," "yellow," and "blue." While they sing to the tune of “Head, Shoulders, Knees, and Toes,” students learn the terms for the following body parts: head, arms, legs, and feet. Señora Alicia introduces a new instrument: the triangle. Students also practice a counting activity that reviews numbers "one" through "eleven." Part of the “Art and More” series.
In this episode, host Jason Silva explores the two hemispheres of the brain. Some of the exercises and activities focus on the way the right and left hemisphere of the brain work together. Part of the "Brain Games Family Edition" 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.
With support from the National Science Foundation, wildlife ecologist Chris Wilmers and his team developed a collar to help them learn more about the behavior, metabolism and habitat preferences of mountain lions. In addition to its location, the animal’s behavior and physiology are recorded in unprecedented detail. They’re learning more about how the cats respond to different stimuli, such as climate, and interactions with other animals, and changes in the landscape created by development. Part of the National Science Foundation Series “Science Nation.”
The Nanosystems Engineering Research Center (NERC) for Advanced Systems of Integrated Sensors and Technologies (ASSIST) at North Carolina State University is developing technology that will alert someone when air pollution is about to take its toll on their heart and lungs. ASSIST Director Veena Misra and her multidisciplinary team are using nanotechnology to develop small, wearable sensors that monitor a person’s immediate environment, as well as the wearer’s vital signs. Part of the National Science Foundation Series “Science Nation.”
Psychiatrist and author Dr. Norman Doidge travels across North America to meet some of the pioneering researchers who made revolutionary discoveries about the plasticity of the human brain. He also visits with people, once thought to have had incurable brain injuries, who are now living normal lives. Known in scientific circles as "neuroplasticity," this radical new approach to the brain provides an incredible way to bring the human brain back to life.
The sense of touch is an invisible force of human nature. Today, touch is undergoing a revolution. Science has pushed the limits of nature thanks to technological touch. It is now possible to touch objects virtually that are invisible or located thousands of kilometers away. A simple movement in the air is enough to control them. Medical technology has even succeeded in giving a sense of touch to bionic limbs made of metal, plastic, wires, and processors. Slowly but surely, prostheses are starting to perform better than natural limbs. Part of the “Human + The Future of Our Senses” series.
With funding from the National Science Foundation, Peter Ungar is revealing more details about the lives of human ancestors, and he’s doing it through dentistry. The University of Arkansas anthropologist uses high tech dental scans to find out more about the diets of hominids, a technique that sometimes leads to new and very different conclusions. While anthropologists traditionally determine the diets of our ancestors by examining the size and shape of teeth and jaws, Ungar's powerful microscopes paint a more detailed picture by looking at wear patterns on teeth.
Smelling is as natural as breathing. Sixteen times a minute, air passes through the nose to fill the lungs. Billions of molecules passing through the nasal cavities are captured by the cells of the olfactory organ. Scientists and others are presently working in the realms of taste and smell to understand their powers. They are bringing to light the mystery that, from conception to adulthood, reveals a fabulous potential. Is it possible that one day the nose will help uncover diseases, vanquish pain, and lower stress levels? Part of the “Human + The Future of Our Senses” series.
The eye is one of each human's major sense organs. It gathers light information and transforms it into a signal that is used by the brain to formulate an appropriate response. How does this process work? What are the structures involved, and what do they do? These questions are answered using a unique, integrated approach that combines the anatomy and function of the eye. Includes detailed footage of the dissection of the bovine eye.
For nearly 40 years, Dr. Ellen Ketterson and her research team from Indiana University have been studying juncos in the mountain forests of Virginia. This segment introduces viewers to the junco, the researchers, and the core methods they use to study birds. Set in field, lab, and aviary locations, one landmark study is highlighted in detail: a long-term field experiment investigating the complex effects of the hormone testosterone on behavior, physiology, and evolutionary fitness. Part of Ordinary Extraordinary Junco (Chapter 2).
Showing collections 1 to 4 of 4
Collection of anatomy resources
A collection containing 21 resources, curated by Benetech
Biology related concepts
A collection containing 59 resources, curated by Benetech
Resources related to vision
A collection containing 12 resources, curated by Charles LaPierre
Resources to teach younger students about animals
A collection containing 58 resources, curated by DIAGRAM Center
