Articles Blog

Cancer, How Cancer Starts, How Cancer Spreads, Where and Why, Animation.

The number of cells in a tissue is determined by the balance between cell division and cell death. Uncontrollable cell division leads to formation of abnormal growths called tumors. Tumors can be benign or malignant. Benign tumors are slow-growing and constrained by surrounding connective tissue so they do NOT spread to other organs. They can […]

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Spinal muscular atrophy – causes, symptoms, diagnosis, treatment, pathology

Spinal muscular atrophy, or SMA, is a genetic disorder where nerve cells in the spinal cord die prematurely, and this causes the muscles that would normally be controlled by those nerves to atrophy, or wither away, which causes weakness. When the brain wants a muscle to contract, it sends a signal through an upper motor […]

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Human Inheritance patterns and diseases – 8.2 – Biol 189

In this video we’re going to talk about the inheritance patterns of certain human traits and genetic disorders. So do human traits follow the same inheritance patterns that Gregor Mendel saw in the pea plants? The answer is, for the most part, Yes! Gregor Mendel’s principles apply to the inheritance of many human traits. In […]

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Duchenne & Becker muscular dystrophy – causes, symptoms, treatment & pathology

With muscular dystrophy, “dys” means bad or difficult, and “troph” means nourish; so muscular dystrophy basically refers to the muscle appearing poorly nourished because of degeneration, which leads to muscle weakness. Under a microscope, a biopsy of the tissue shows changes in the muscle itself but not in the nerve or neuromuscular junction; this distinguishes […]

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Biotechnology: Genetic Modification, Cloning, Stem Cells, and Beyond

It’s Professor Dave, let’s explore biotechnology. In this biology series we’ve learned a lot about cells, their structure, and the genome within. Along with a sophisticated understanding of any science comes not just an enhanced worldview, but also the opportunity to apply this knowledge in order to create technology. This represents our ability to shape […]

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