Absolutely understand Osmotic pressure ! скачать в хорошем качестве

Absolutely understand Osmotic pressure !

【The reason why water isn't drawn out of your body during sea bathing is explained in detail below.】 Osmotic pressure, which plays a significant role in various phenomena around us, is an essential topic in the study of physiology. This is essential knowledge, so be sure to fully understand it with this video!! 0:00～Why does salt draw out water? 1:08～Let's explain osmotic pressure visually！ 2:00～Explanation of a Semipermeable membrane 3:52～The key point of Osmotic pressure 4:10～Hypertonic, Isotonic, and Hypotonic solution 4:43～Unveilling the Secret at the Beginning 6:08～Body Fluids and Osmotic Pressure 8:07～About Albumin 8:36～Recap Humans are composed of cells, and the surfaces of these cells are semipermeable membranes. Naturally, you might think that water would get drawn out through the skin. However, in reality, this doesn’t happen. The reason is that the cells of the human epidermis are all dead. Epidermal cells, which originate deep within the skin, gradually move up to become the epidermis (the skin), but they die in the process and become keratinized. Keratinization means that the cells are hardened with a protein called keratin. Keratinized cells lose their semipermeable membrane function, making it difficult for water and substances to pass through. Therefore, even when you enter the sea, water does not get drawn out. The skin acts as armor for humans:) In contrast, the mucous membranes in your nose and eyes have living cells, so when seawater gets in there, it causes pain due to osmotic pressure.