Homeostasis

How it affects the Digestive System & More

Homeostasis & The Digestive System

Homeostasis is where the main goal is to keep the internal conditions constant. When someone is healthy, their body temperature maintains a body temperature of 98.6 degrees Fahrenheit. The body can control temperature by making or releasing heat. "Another example of homeostasis is glucose. It is a type of sugar that is found in the bloodstream, but the body must maintain proper glucose levels to ensure that a person remains healthy. When glucose levels get too high, the pancreas releases a hormone known as insulin. If blood glucose levels happen to drop too low, the liver converts glycogen in the blood to glucose again, raising the levels. When bacteria or viruses that can make you ill get into your body, your lymphatic system kicks in to help maintain homeostasis. It works to fight the infection before it has the opportunity to make you sick, ensuring that you remain healthy." - http://www.answers.com/Q/How_does_the_digestive_system_maintain_homeostasis

"The maintenance of healthy blood pressure is an example of homeostasis. The heart can sense changes in the blood pressure, causing it to send signals to the brain, which then sends back signals telling the heart how to respond. If blood pressure is too high, naturally the heart should slow down; while if it is too low, the heart wants to speed up."

- http://www.answers.com/Q/How_does_the_digestive_system_maintain_homeostasis

The digestive system is a group of organs working together to convert food into energy and basic nutrients to feed the entire body. The organs include the anus, appendix, esophagus, gallbladder, large intestine, small intestine, mouth, pancreas, stomach, liver, rectum, and tongue.

How does the digestive system maintain homeostasis? The digestive system and circulatory system work together to maintain homeostasis, the circulatory is basically the delivery system. Blood in the capillaries carries the nutrients to all the cells in the body. Delivering WBC's to fight infections and platelets help in blood clotting. RBC's transport oxygen and hydrogen ions throughout the body. The plasma transports the cells so without the plasma, the cells and platelets couldn't go anywhere. All of these help maintain homeostasis.

Circulatory System

The circulatory system includes the heart, and blood vessels. Three types of blood vessels include arteries (sends blood from heart to body), veins (carries blood from body to heart), and capillaries (delivers low-oxygenated blood to veins). There are four valves in the heart. The Biscuspid Valve (aka Mitral Valve), the Tricuspid Valve, the Aortic Valve, and the Pulmonary Valve. The main function of the Circulatory System is to keep the body working by delivering oxygen to body cells and removing carbon dioxide (aka waste) from the cells. It works with the skeletal and muscular system by supplying the body with blood so it can move.

Skeletal System

The skeletal system gives the body its shape and support. It serves as a site for muscles to attach to move body parts, protects delicate organs such as the heart, lungs, spinal cord, and brain, and it produces RBC's, WBC's, and platelets in the marrow. It serves as a storage place for calcium and phosphorus as well. It works with the muscular system to help you move your body parts. The circulatory system gives the body parts oxygen and blood it needs to move.

Muscular System

The muscular system's main function is to move the body. There are three types of muscles. Cardiac, smooth, and skeletal muscles.

Skeletal Muscle = used in locomotion and in all voluntary movement

Cardiac Muscle = found only in heart (involuntary)

Smooth Muscle = found in digestive tract, blood vessels, and other internal organs (involuntary)

Involuntary muscle = muscles that move without your control.

Voluntary muscle = muscles that move with your control

It works together with the skeletal system by attaching muscles to bones so the body can move. It works with the circulatory system by being supplied with blood to the body parts so it can move.

Junk Foods

Junk food = "Food that has low nutritional value, typically produced in the form of packaged snacks needing little or no preparation."

How does it affect the circulatory system? The trans fat in junk food can clog up your arteries. That stops your body from getting the oxygen it needs to survive. Junk foods don't just clog up your arteries, if a blood vessel in your brain gets clogged, the blood vessel could explode which could lead to death. Because junk food has no nutrients, your body will use the sugar from the junk food for energy. This is why you have a "sugar high" and after some of the sugar runs out, you then feel a "sugar crash". Not just that, the sugar in the junk food will cause your blood sugar to rise, this causes your pancreas to get overworked. Therefore the pancreas cannot work properly and it cannot produce insulin, the hormone needed to keep your blood sugar stable.

How does it affect the skeletal system? Too much fat has a negative effect on the development of bone tissue, especially at an early age. "A high density of fast food restaurants in the area significantly increased the risk of reduced bone mineral density, increased fragility. Doctors warn that food from fast food places is sometimes a good option to eat for adults. Children should be fed extremely useful and healthy food that is balanced in nutritional value, proteins, fats and carbohydrates." Source: http://medicineinfo.net/fast-food-does-harm-to-the-skeletal-system-of-children-scientists.html

How does it affect the muscular system? You might be concerned on how too much food might cause you to gain weight, there are far worse consequences than that. "People who ate a diet focused on macaroni and cheese, processed lunchmeat, sausage biscuits, mayonnaise, and microwavable meals with unhealthy fats, for example, showed serious negative changes to their metabolism after just five days.

After eating the junk-food diet, the study participants (12 healthy college-aged men) muscles' lost the ability to oxidize glucose after a meal, which could lead to insulin resistance down the road.1" - http://articles.mercola.com/sites/articles/archive/2015/04/29/junk-food-metabolism.aspx

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