Homeostasis

Front

What is homeostasis?

Back

Homeostasis is the process by which living organisms maintain a stable internal environment despite changes in external conditions.

Front

What is a negative feedback loop?

Back

A negative feedback loop is a control mechanism that counteracts a change in a system, helping to maintain stability. For example, blood sugar regulation.

Front

What is a positive feedback loop?

Back

A positive feedback loop is a process that amplifies a change or output, leading to an even greater change. An example is the release of hormones during blood clotting.

Front

How does shivering help maintain body temperature?

Back

Shivering generates heat through muscle activity, helping to increase body temperature when the environment is cold.

Front

What role do hormones play in homeostasis?

Back

Hormones are chemical messengers that regulate various physiological processes, including growth, metabolism, and homeostasis.

Front

What is thermoregulation?

Back

Thermoregulation is the process by which the body maintains its internal temperature within a narrow range, despite external temperature changes.

Front

What happens during a negative feedback response to high blood sugar?

Back

When blood sugar levels rise, the pancreas releases insulin, which helps cells absorb glucose, lowering blood sugar levels back to normal.

Front

What is the significance of maintaining pH levels in the body?

Back

Maintaining pH levels is crucial for enzyme function and overall metabolic processes; deviations can disrupt cellular activities.

Front

What is an example of a physiological response to dehydration?

Back

When dehydrated, the body releases antidiuretic hormone (ADH) to promote water reabsorption in the kidneys, conserving water.

Front

How does the body respond to overheating?

Back

The body responds to overheating by increasing sweat production and dilating blood vessels to release heat.