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What is homeostasis?

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Introduction

´╗┐What is Homeostasis? Homeostasis is all about keeping a steady balance in the internal environment. This balance has to be at an optimum range of level as temperature, respiration which is carbon dioxide and oxygen, blood glucose and blood pressure and pulse. The human body needs to have a balance of everything by regulation. The internal environment is the conditions inside the human body. The conditions stay mostly constant despite any changes in the outside environment such as temperature. The skin, kidneys, liver, endocrine system, nervous system and sensory system each play a part in retaining the internal environment. The external temperature can change depending on each day and the season we are in. The temperature could be 40 degrees; however, the human body temperature would stay the same which is about 37 degrees. By sweating, vasodilatation, vasoconstriction and shivering the humans body temperature stays the same. ...read more.

Middle

If the ions inside our body are not kept balanced then the cells may start to shrivel, burst or get swollen. The most important ions consist of sodium, potassium, hydrogen and phosphate. They are maintained through the water we drink and urinating. As well as this we can lose them through sweating. Sugar: for respiration, having the right amount of sugar is crucial. If blood levels fall really low then the individual will die. The blood sugar level is controlled by the amount and the storage of glucose and that i controlled by insulin which is a hormone. Water: In the human body, seventy percent of its mass is water. If the correct amount of water is not frequent in the body then any human being would die. ...read more.

Conclusion

HORMONES The muscles: The muscles in the body keep a steady and stable body temperature. Shivering helps to make heat. SHIVERING AND MUSCLES The Kidney: the kidneys are involved in keeping the right amount of water in the body. The skin: this is the biggest organ, and has the main role of keeping the same temperature. Vasodilatation: This is when the body?s temperature rises. The blood vessels become wider which allows more blood to flow. The heat that is lost from the blood helps cool the blood which is circulating. Vasoconstriction: this is when the temperature of the body falls. The blood vessels constrict. Cooler blood flows near to the surface and this makes heat loss. Every cell in the human body needs oxygen and glucagon in order to carry out living processes. Carbon dioxide is a waste product and needs to be removed before they become harmful and damage the cells. ...read more.

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