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The medulla oblongata is the inferior (lowest) part of the brain where the brain unites with the spinal cord. This structure controls breath, heartbeat and regulates the diameter of blood vessels thereby adjusting blood flow and blood pressure.

The diaphragm and intercostal muscles are rhythmically stimulated by the nerve pulses coming from medulla oblongata.  The concentration of CO_{2 in} the lung is monitored by medulla oblongata. If the level rises, the medulla responds by increasing the activity of the motor nerves that control the intercostal muscles and diaphragm.

The rate of respiration (oxygen consumption and carbon dioxide production) varies with level of activity. Intense exercise may increase by more than 20 times the oxygen consumption. By increasing the rate and depth of breathing the adequate level of oxygen is provided to the cells. Thus the medulla oblongata controls very important functions in the body. Destruction of the medulla may cause an immediate death.

Construction area always is a potentially dangerous place for workers because of the equipments, machines, cranes, excavators, cars and tracks running, working, cutting, burring etc. Workers at construction site can be injured if mishandled tools and equipments. To avoid this all crew members should be trained and instructed for  equipments and operations safety. It is always helpful to have someone at the job site that can watch and secure the workers from accidents and limit other people’s access to dangerous site. YourSafetyComesFirst.com website has valuable posts about the safety at work, and many helpful tips how to avoid injuries if you run power equipment, working on ladders etc.

Every new or an experienced homeowner needs to remodel his house or just part of it when time comes up. Although woodwork at home  takes plenty of time and investments to be done, however that makes home warmer and good looking like a frame for picture. Whether it is custom built-ins, a desk for home-office, entertainment center, exterior or interior remodel, moldings, staircases, windowsills and doors , it should fit to your home and budget. Woodworkvoice.com website is a must place to visit if you plan to start any kind of woodwork. This website has several great articles about the woodworks at home. You'll find plenty of very interesting ideas and helpful tips on this topic.

http://www.woodworkvoice.com

What Is Stress?
To be simple ,stress is a feeling like there are too many things to do but you have not  enough time and energy for that or you're not sure you can do that but you have to. The events that may induce stress (stressors) can be very different and cover a wide range of  situations . For instance it can be a physical danger, pain, an appointment, highway driving, all "first time" events, tests(physical or mental), overwork, relationship problems , not enough sleep etc. In response to stress some physiological changes occur in our  body and brain to meet the unknown or tough situation and  act adequately.

Body responds to stressors activating the nervous system by releasing into our bloodstream specific substances referred us hormones such as adrenaline and cortisol. This hormones increase metabolism, blood pressure, heart and breathing rates enhancing our overall alertness, muscle tones, vision and body energy releasing more glucose by liver. Some people may get sweated when stressed. All this changes prepare our body to act quickly and effectively to meet and handle the stressful situation.

Reaction to the stress known as the stress response enhances our ability to perform well while under pressure. Usually nervous system quickly returns to its normal state, standing by to respond again when needed. However it can cause problems when stress response overreacts or fails to turn off. Especially when we are in long-term stressful situations like family problems, moving to a new neighborhood or job etc. Situations like these may keep our nervous system overactivated and continue to release extra stress hormones over and again. This can significantly lower our body's reserves and  weaken our immune system, and cause many health-related problems.