Homeostasis

Insulin

A hormone produced by the pancreas or taken as a medication by many diabetics

negative feedback

A primary mechanism of homeostasis, whereby a change in a physiological variable that is being monitored triggers a response that counteracts the initial fluctuation.

Glucagon

A protein hormone secreted by pancreatic endocrine cells that raises blood glucose levels; an antagonistic hormone to insulin.

positive feedback

A type of regulation that responds to a change in conditions by initiating responses that will amplify the change. Takes organism away from a steady state.

What are the four receptor used in detecting change in the body

Chemoreceptors detect the presence of chemicals. Thermoreceptors detect changes in temperature. Mechanoreceptors detect mechanical forces. Photoreceptors detect light during vision.

Homeostatic Control-II

Control Center

Homeostatic Control-I

Receptor

Homeostatic Control-III

The effector

What are the two components of the control system and explain their role in maintaining homeostasis in the body?

The nervous and endocrine systems exert the ultimate control over homeostasis because they coordinate the functions of the body's systems. Regulation of body temperature, blood pressure, pH, and glucose concentration are four examples of how the body maintains homeostasis.

Why is feedback important in living things?

•Allows baseline to be regained and conserves resources (cellular materials and energy) •Conserves resources

What things in your body need to be kept balanced?

•Body Temperature •Blood Pressure •Blood pH •O2 and CO2 concentration •Osmoregulation-Water Balance •Blood glucose

How does homeostasis work?

•Feedback pathways •specific organs and structures must communicate with each other in response to changes in the body •Keeps levels of certain processes within a normal range

What is homeostasis?

•process that occurs in all living things •all organ systems work together to achieve homeostasis •ability of an organism to maintain its internal environment, despite changed to its internal or external environment