The digestive system maintains homeostasis by creating the proper pH balance in the gastric environment. In addition, by maintaining the correct enzyme ratio, the digestive system nurtures beneficial bacteria that inhibit disease and produce biological substances the body needs such as vitamin K.
Homeostasis is the balance the body maintains to continue to function properly. All the bodily systems, including the digestive system, contribute to homeostasis. The body maintains homeostasis using both positive and negative mechanisms. Negative feedback occurs when the body senses an imbalance, and the various systems work to counterbalance and restore proper equilibrium. Positive feedback happens when the body senses a change and works to enhance it.
The body's pH balance, its ratio of acid and alkaline, is an important part of overall homeostasis. In the mouth, saliva is only slightly acidic. However, the digestive system needs and maintains a highly acidic environment in which to rapidly break down food. Along with the regulation of the pH balance, the digestive system maintains microflora such as acidophilus and bifidobacterium that break down cancer-causing carcinogens and other infections. After it breaks down food through a complex conveyer-like system, the digestive system passes needed nutrients on to the circulatory system for absorption by the body.Learn More
The stomach is the primary organ that breaks down food as it enters the digestive system. This organ receives food from the esophagus and eventually directs the partially digested food into the small intestine. It also helps kill harmful bacteria.Full Answer >
The human heart contains many intricate elements. The primary structures of the heart include the right and left atria, the right and left ventricles, the aorta, the pulmonary arteries, and both the atrioventricular and semilunar valves. These structures operate via electrical signals from the brain that allow the heart to distribute blood throughout the body.Full Answer >
The heart is a single organ, but it functions as a double pump sending oxygen-depleted blood to the lungs to pick-up oxygen and unload carbon dioxide, while simultaneously sending oxygen-loaded blood coming from the lungs to cells throughout the body. The heart's right ventricle pumps blood to the lungs, while the left ventricle pumps the oxygenated blood to the body cells. The left ventricle is the stronger of the two and performs the more demanding part of the double-pump work.Full Answer >
The main function of the heart is to pump blood to the lungs to be saturated with oxygen, and then pump it out into the body to supply the cells with oxygen. The heart, along with the blood vessels, make up the cardiovascular system.Full Answer >