Homeostasis

Homeostasis

The state of regulated physiological balance involving coordination of organ systems.

Homeostatic mechanisms

Processes that maintain homeostasis through collaboration of nervous and endocrine systems.

Sensory receptors

Detect changes in the environment and transmit information to a control center.

Control center

Analyzes information received from sensory receptors and sends commands to effectors.

Effectors

Components that receive commands from the control center to maintain homeostasis.

Negative feedback loops

Mechanisms that restore systems to their set point by counteracting changes in the opposite direction.

Example of negative feedback

A thermostat controlling room temperature and the body's response to temperature changes.

Positive feedback loops

Processes that amplify disruptive influences, such as during childbirth or blood clotting.

Risk of excessive positive feedback

Can be dangerous and may require intervention, such as in cases of high fever.

Homeostasis and fluctuations

Homeostasis does not mean constant conditions, but routine fluctuations within a normal range.

Impact of strenuous exercise on homeostasis

Causes temporary increases in blood pressure and body temperature, which homeostatic mechanisms work to regulate.