Anatomy and physiology
Describe the concept of homeostasis and the mechanisms that regulate the heart rate, breathing rate, body temperature. Explain the responses to changes in the body during exercise and explain the importance of homeostasis in maintaining the healthy function of the body.
In order for the body to work efficiently it must maintain a constant internal environment.
P5: Explain the concept of homeostasis
Describe your understanding of homeostasis and the homeostatic mechanisms that regulate
* Heart rate
* Breathing rate
* Body temperature
M2: Discuss the probable homeostatic responses to changes in the internal environment during exercise.
Even if you do not take regular exercise you will be aware of changes that occur in your body if you do anything strenuous. Even just running for the bus might make you gasp for breath, your heart to race and your body start to sweat.
Discuss what is happening in the body when these changes take place.
D2: Evaluate the importance of homeostasis in maintaining the healthy functioning of the body.
Having said that the body must maintain a constant internal environment in order to function in a healthy manner, now give details why homeostasis is so important for the body. What would happen in your body if these mechanisms didn’t take place?
Homeostasis is the maintenance of a constant internal environment in response to a changing external environment. Internal environment refers to blood, tissue fluid, body cell contents and metabolic processes that take place. Constant does not mean fixed but means that the internal environment stays within a narrow range of variables to make sure that the body can work efficiently. This range is said to be regulated. The brain and nervous system help to control homeostatic mechanisms and also help to identify when key variables might go outside the normal range.
All homeostatic mechanisms use...