Homeostasis is the process by which the body does what? A Transmits nerve impulses (B) Produces energy (C) Breaks down nutrients D Maintains stable internal conditions
The correct answer and explanation is:
The correct answer is D) Maintains stable internal conditions.
Homeostasis refers to the body’s ability to maintain a stable internal environment despite changes in the external environment. This process is vital for survival, as it ensures that the body’s systems function optimally. Several physiological mechanisms are involved in homeostasis, including temperature regulation, blood sugar control, fluid balance, and pH balance.
For example, the body constantly regulates its internal temperature. If the body becomes too hot, mechanisms like sweating and increased blood flow to the skin help cool it down. Conversely, if the body becomes too cold, shivering and constriction of blood vessels help conserve heat. Similarly, blood sugar levels are carefully controlled. When blood sugar levels rise after eating, the pancreas releases insulin to promote the uptake of glucose into cells, thereby lowering blood sugar levels. If blood sugar levels drop too low, the pancreas releases glucagon to stimulate the release of stored glucose from the liver.
Homeostasis also involves maintaining the balance of electrolytes and fluids in the body. Kidneys, for instance, filter blood and regulate water and salt levels, helping to maintain proper hydration and electrolyte balance. pH levels are also crucial, with the body utilizing buffering systems to keep the blood pH within a narrow range for proper cellular function.
In essence, homeostasis enables the body to adjust to environmental fluctuations and maintain a stable internal environment, which is essential for normal metabolic function and overall health. Without homeostasis, the body would struggle to perform basic functions, leading to illness or even death.