A change or disturbance that triggers the feedback loop.

A specialized sensor that detects the stimulus and initiates a response.

A central processing unit that receives information from the receptor and determines the appropriate response.

A component that carries out the response directed by the control center.

The action or effect produced by the effector to counteract the initial stimulus and restore homeostasis.

Stimulus: High or low blood sugar levels.

Receptor: Pancreatic cells detect the glucose levels.

Control Center: Pancreas releases insulin or glucagon based on the glucose levels.

Effector: Liver and muscles respond by storing or releasing glucose.

Response: Insulin promotes glucose uptake, while glucagon increases glucose release, maintaining balanced blood sugar levels.

Stimulus: Low calcium levels in the blood.

Receptor: Parathyroid glands detect the decreased calcium levels.

Control Center: Parathyroid glands release parathyroid hormone (PTH).

Effector: Bones release calcium into the blood by bone resorption.

Response: PTH promotes calcium uptake from the intestines and kidneys, restoring normal calcium levels.