Feedback Mechanisms

Front

What is a feedback mechanism?

Back

A feedback mechanism is a biological process that uses the conditions of a system to regulate its function, often maintaining homeostasis.

Front

What is a negative feedback loop?

Back

A negative feedback loop is a process that counteracts a change in a system, helping to return it to its set point or normal range.

Front

What is a positive feedback loop?

Back

A positive feedback loop is a process that amplifies or increases a change in a system, leading to a greater deviation from the normal range.

Front

What role does insulin play in blood glucose regulation?

Back

Insulin helps lower blood sugar levels by facilitating the entry of glucose into cells.

Front

What is a set point in homeostasis?

Back

A set point is the ideal value or range that a physiological variable is maintained at, such as body temperature or blood glucose levels.

Front

How does the body respond to high blood sugar levels?

Back

The body releases insulin from the pancreas, which helps lower blood sugar levels by allowing glucose to enter cells.

Front

What happens during positive feedback in childbirth?

Back

During childbirth, the release of oxytocin increases contractions, which leads to more oxytocin being released, amplifying the process.

Front

What is the significance of sweat evaporation in temperature regulation?

Back

Sweat evaporation helps cool the body down, indicating a negative feedback response to high body temperature.

Front

What is an example of a condition that indicates negative feedback?

Back

The production of a particular product stops its production when the desired level is reached, such as hormone regulation.

Front

What is the difference between positive and negative feedback?

Back

Positive feedback amplifies changes, while negative feedback counteracts changes to maintain stability.