https://diler.tube/videos/watch/46a900b5-a2ba-4a0c-aa9a-2ae40c7429e6 Homeostasis is a term first defined by Claude Bernard in 1865. It means maintaining a constant internal environment. Senses all around the body are measuring various things and sending the information back to the brain. The brain then does its best to keep all these things stable and constant to keep the body working properly. Homeostasis is maintaining a constant internal environment. What kind of things need to be kept constant in the body? It's very important to keep our temperature the same, at around thirty seven degrees Celsius. You can find out more about this in the video on temperature regulation. You also need to keep the levels of sugar in the blood constant along with levels of ions and water. Your blood pressure needs to be carefully monitored along with the amount of waste in the blood such as carbon dioxide and urea. Let's say one of these factors goes too high or low, what is the brain going to do to get it back to normal levels? The answer to that is negative feedback. Negative feedback is the process whether the brain uses either a hormone or the nervous system to send a signal to the part of the body that can rectify the problem. For example, after you eat a meal with your blood sugar level increases. This is detected, and the pancreas will release a hormone called insulin that causes the sugar to be stored in the liver. The blood sugar level will then return to normal. Sat, 14 Nov 2026 00:37:53 GMT https://validator.w3.org/feed/docs/rss2.html PeerTube - https://diler.tube https://diler.tube/lazy-static/avatars/f58b270a-6076-478a-ad43-3888a532ecb4.png https://diler.tube/videos/watch/46a900b5-a2ba-4a0c-aa9a-2ae40c7429e6 All rights reserved, unless otherwise specified in the terms specified at https://diler.tube/about and potential licenses granted by each content's rightholder.