Feed Back Loops and Body Systems

Front

What is homeostasis?

Back

A tendency to maintain a balanced or constant internal state; the regulation of any aspect of body chemistry, such as blood glucose, around a particular level.

Front

What could result from failure to maintain homeostasis?

Back

Lack of internal balance, eventual death, difficulty carrying on metabolism; all three.

Front

What does high blood sugar promote according to the feedback loop?

Back

Insulin Release.

Front

What is an enzyme?

Back

A type of protein that speeds up a chemical reaction in a living thing.

Front

What detects change and sends a message to the control center?

Back

Receptor.

Front

What is the role of the control center in a feedback loop?

Back

To process the information received from the receptor and determine the appropriate response.

Front

What is an effector in the context of feedback loops?

Back

An organ or cell that acts in response to a stimulus to restore homeostasis.

Front

Define negative feedback loop.

Back

A process that counteracts a change in a physiological variable to maintain homeostasis.

Front

Define positive feedback loop.

Back

A process that amplifies a change in a physiological variable, moving the system away from its starting state.

Front

What is the function of glucagon?

Back

To raise blood glucose levels by promoting the conversion of glycogen to glucose in the liver.