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The Integumentary System, Part 1 – Skin Deep: Crash Course A&P #6

When you hear about your “organs,” you probably think of your heart, or your liver, or your lungs. Maybe you picture Captain Nemo playing the organ aboard the Nautilus. Why do they have an organ on a submarine? That is – that doesn’t make any sense. But your first associations with that term probably overlook […]

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Integrative Biology 131 – Lecture 21: Respiratory System

MARIAN DIAMOND: We continue on down our respiratory tract. We showed the nasal epithelium, and today we’re down into the pharynx. The pharynx, then, is a fibromuscular tube. A fibromuscular tube. Muscular tube. And it’s going to extend from the base of the skull, from base of skull to the level of the sixth cervical […]

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