Question

We stay healthy because our bodies keep everything in balance. Which system, that we studied this semester, do you think is the most important in maintaining homeostasis? In your discussion be sure to include the main function of the system, cells and tissues that are involved, and how it maintains homeostasis. You can also include how it helps regulate other systems if you think that is important

Answer 1

Homeostasis is the persistent maintenance of optimum physiological conditions under normal conditions and the ability to return to normal conditions under stress. It is shortly defined as “the dynamic steady state of the body in good health.”

Although all the body systems are involved in regulating the homeostasis, nervous system and endocrine system are actively involved in regulating the homeostasis. These two systems work together, and individually to regulate the body homeostasis.

In association with these systems, the organ systems that include the digestive system, nervous system, cardiovascular system, respiratory system, and excretory system work together to maintain the homeostasis.

Nervous system is the media of communication between the external and internal environment, as well as within the internal environment of the body by bridging the signals between the peripheral nervous system and the central nervous system. For example, sensing the cold temperature, increases the muscle contraction to generate heat.

Endocrine system organises various body functions by its hormonal secretions. Hormone is a chemical messenger secreted from an “endocrine gland” (ductless glands) which is transported to a distant site from its origin, where it produces its action (paracrine action). Similar to the nervous system, endocrine system also serve as a media of communication. For example, reduced blood glucose levels stimulate the release of glucagon from the pancreas.