1. Homeostasis is a process of keeping our body’s internal environment stable although there is always a constant change that happens internally and externally. The human body’s ability to maintain a stable internal environment is important for our survival (“Homeostasis,” 2012, para. 1).
The eleven body systems work together to maintain balance in the body (Seeley, Stephens, & Tate, 2002, p. 7). The nervous and endocrine systems are the two most important systems for maintaining homeostasis. The nervous system regulates homeostasis by conducting nerve impulses to the brain and other parts of the body while the endocrine system releases hormones into the blood (McLaughilin, Stamford, & White, 2007, p. 333).
The hypothalamus and pituitary gland are parts of the brain that help maintain homeostasis. The hypothalamus is the primary link between the nervous system and the endocrine system. It is also responsible for regulating many important body processes like body temperature, blood glucose, and blood pressure (Tortora & Derrickson, 2012, p. 545).
The pituitary gland is located under the hypothalamus. The hormones produced by the hypothalamus stimulate the anterior pituitary gland to produce its own hormones. On the other hand, the posterior pituitary gland stores the hormones secreted by the hypothalamus. The pituitary gland is the most important component of the endocrine system because the hormones it produces stimulate many glands to produce their own hormones (Seeley et al., 2002, p. 271).
Most body systems maintain homeostasis by using negative feedback mechanisms (“Homeostasis,” 2012, para. 1). A negative feedback system is a process in our body that eliminates the stimulus which caused a change in a controlled condition to bring the body back to homeostasis (Seeley et al., 2002, p. 7). It is made up of receptors, a control centre, and effectors. Receptors detect the stimulus that changes a controlled condition. A control centre, on the...