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2019
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Video
Resource inequality is one of our greatest challenges, but it's not unique to humans. Like us, mycorrhizal fungi that live in plant and tree roots strategically trade, steal and withhold resources, displaying remarkable parallels to humans in their capacity to be opportunistic (and sometimes ruthless) -- all in the absence of cognition. In a mind-blowing talk, evolutionary biologist Toby Kiers shares what fungi networks and relationships reveal about human economies, and what they can tell us about inequality.
- Subjects:
- Biology
- Keywords:
- Mycorrhizal fungi -- Ecology
- Resource Type:
- Video
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Video
Your lifelong health may have been decided the day you were born, says microbiome researcher Henna-Maria Uusitupa. In this fascinating talk, she shows how the gut microbes you acquire during birth and as an infant impact your health into adulthood -- and discusses new microbiome research that could help tackle problems like obesity and diabetes.
- Subjects:
- Health Sciences and Biology
- Keywords:
- Microorganisms Medical genetics
- Resource Type:
- Video
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Video
Easy access to nutrients has contributed to the increase in obesity in the human population. But, what is obesity and why isn’t everybody fat? Dr. Stephen O’Rahilly provides a biomedical perspective of obesity, and evaluates which genes could potentially shift the balance towards obesity. As he explains, one becomes obese when the balance between energy intake and energy spent is shifted. Surprisingly, mutations that lead to obesity in humans aren’t in genes involved in metabolism and energy storage, but failure in satiety signals in the brain that result in people eating too much. The excess of energy intake over energy expenditure leads to obesity. What is the consequence of obesity in human health? Physically, obesity can result in lower mobility and sleeping disorders. But, in humans, the link between obesity and metabolic diseases isn’t straightforward. For example, not everyone that’s obese becomes insulin resistant. As O’Rahilly explains, the probability of an obese individual to have a metabolic disease is linked to the capacity of adipose tissue to store the extra fat. Mutations that decrease fat storage in adipose tissue increase the chance of metabolic diseases, like insulin resistance, even when the person is not obese.
- Subjects:
- Health Sciences and Biology
- Keywords:
- Obesity -- Genetic aspects
- Resource Type:
- Video
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Video
We're going to take apart a plastic anatomy model and see what we can find in the abdomen. We'll identify as many organs as we can, see how they fit into the abdomen relative to one another, working our way from anterior to posterior.
- Course related:
- HTI17102 Imaging Anatomy
- Subjects:
- Health Sciences and Biology
- Keywords:
- Organs (Anatomy) Abdomen
- Resource Type:
- Video