What is biological homeostasis?
Homeostasis is commonly used as a word to describe any system that is in a stable state, self -removing and maintaining. It can be applied to a closed system such as a nuclear robotic rover for space exploration. It is more often used for open systems that have input and output channels for interacting with its environment or other systems. However, very complex systems are rarely perfect, so this term describes the ideal hypothetical condition. The most complex processes include life and biological homeostasis has been the strictest studied.
The term was first created in the 1920s as the concept of human functioning. Since people survive in a wide range of environment, under different conditions and with different diet, it is assumed that the human body has its own adaptive mechanisms. Despite many differences in an external input or stimulus and corresponding to different body reactions, they believe in a systematic internal state, which is essentially the same in all people. Biological homeostasis can beApplied to the whole organism and also to its interdependent subsystems.
One of the most commonly used examples to explain biological homeostasis is the control of internal temperature. In humans, the ideal temperature is exactly 98.6 ° Fahrenheita (37 ° Celsius). Whether it is a fever from the summer sun or from illness, if the body temperature rises above normal, it will sweat. The evaporation of water in the sweat cools down the body. If the internal temperature drops below this fine line, the body begins to shake because one of the by -products of the muscle contraction is heat.
other organisms can regulate their temperature differently. For example, cold -blooded reptiles might need to absorb radiant heat from the sun or warm rock to increase their body temperature to the level necessary for physical activities. Kangaroos from the arid Australian desert cools his bodies by licking his paws. In all cases the goal is the same - to maintain criticin the inner balance.
Another example of biological homeostasis should be maintained correct pH or level of acidity. For example, the stomach is highly acidic. On the other hand, the pH of human blood has a narrow range of tolerance, which is slightly more alkaline than the neutral measure of pure water. Everyone is critical to a healthy function.
The mechanisms by which the body achieves the correct balance is essentially typical of homeostatic systems. First, the receptor of some kind must feel the current state of the system and pass this information to the control center of some type. In humans, it could be nerves carrying electrical signals into the brain. With the knowledge of the optimal state of the system, the control center then sends an effector command, which results in adjustment to the system status. The human brain can send signals to a specific organ that releases hormones that chemically restore balance.
Biological Homeostasis is the regulation of the internal environment of the organism because external forces or spaceEdi is constantly changing. The basic, typical process is the corresponding constant feedback. Whether the feedback is positive or negative, the connection between the receptor, the control center and the effector is cyclical. With permanent plus modifications combined with negative adjustments, the zero state is equivalent to a healthy function. The wide theory of the disease defines them as an imbalance or disorder of this loop of regulatory feedback.