Homeostasis Flashcard

Front

What type of feedback mechanism is most common in the human body?

Back

Negative feedback.

Front

What is the term for the tendency of an organism to maintain a balanced state in order to stay healthy?

Back

Homeostasis.

Front

Give an example of positive feedback that indirectly maintains homeostasis.

Back

The chemical reactions involved in blood clotting.

Front

What happens when glucose levels in the blood rise?

Back

The brain sends a signal to the pancreas, which releases insulin to lower blood sugar levels. This is an example of negative feedback.

Front

What is positive feedback?

Back

Positive feedback is when the change caused by a stimulus is increased.

Front

What role does insulin play in blood sugar regulation?

Back

Insulin opens channels in cell membranes to allow glucose to enter the cell, lowering blood sugar levels.

Front

How does negative feedback help maintain homeostasis?

Back

Negative feedback counteracts changes in the body to return it to a set point or normal range.

Front

What is the difference between positive and negative feedback mechanisms?

Back

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

Front

Can you name a physiological process that uses negative feedback?

Back

Regulation of body temperature.

Front

What is an example of a situation where positive feedback is beneficial?

Back

During childbirth, the release of oxytocin increases contractions.