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News, Jobs & Trends: : Human Resources:
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The Organ We Love - How The Heart Works
Being the strongest muscle in the body, the hearts purpose is to pump blood through our blood vessels through rhythmic contractions. To regulate blood pressure and volume, the heart secrets `ANF`, which is a very powerful peptide hormone. It affects the regulatory region of the brain, as well as the kidneys, blood vessels, and the adrenal glands.
First off, i would like to clear up a worldwide rumor; the Heart is not located on the left side of your body! Its actual location is found in the center of your chest, just SLIGHTLY of to the left hand side, and underneath the sternum. For protection, the heart is enveloped in a sac called the pericardium, and is surrounded by the lungs. First thought is, `why does the strongest muscle in the body need so much protection?`. It`s fragile! Weighing in at about 300 grams, the heart consists of 4 chambers; 2 lower ventricles and 2 upper atria. Valves between the atrium and the ventricle control proper blood flow from one to the other.
The job of pumping blood everywhere in the body is a huge responsibilty. Each and every beat of the heart consists of a sequence of events called the cardiac cycle. `Cardiac` is greek, meaning `heart`. There is 3 major steps in the sequence: atrial systole, ventricular systole and complete cardiac diastole. After the blood has completely left the atria, the atrioventricular valves (located between atria and ventricular chambers), close to prevent backflow. This function is what you would recognize as your heartbeat. Next, there is a contraction of the ventricles and flow of blood into the circulatory system. This is known as the ventricular systole. Once again, valves called `pulmonary` and `aortic semilunar` close to prevent backflow. After these 2 steps, the heart takes a quick break called complete cardiac diastole. This allows the refilling of blood and to start the process over.
News Jobs & Trends .Human Resources
Human Resources |
Ministry of Works and TransportNew VisionThe registration and classifi cation exercise is intended to enable consultants to be recognized by their capacity (resources), competence (skills) and capability (human resources) and be given opportunities in their areas of specialisation. 3.and more » |
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Civil Service Minister Receives Yemeni DelegationOman News AgencyThe meeting reviewed aspects of cooperation between the two brotherly countries and means of promoting them, as well as exchanging viewpoints in the civil service fields and the mechanisms of promoting the human resources and challenges facing the Arab ...and more » |
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Ministry of Works and TransportNew VisionThe registration and classifi cation exercise is intended to enable contractors to be recognized by their capacity (resources), competence (skills) and capability (human resources) and be given opportunities in their areas of specialisation. 3.and more » |
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Mike Gunter named COO of Stereo DScreen InternationalGunter will oversee the operating and administrative functions of Stereo D including finance, business affairs, M&A, human resources and management of the company's facilities in Burbank, California and Pune, India. He will also share oversight of ...and more » |
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County hires new HR directorNews of Orange CountyPosted: Saturday, May 19, 2012 11:00 am | Updated: 4:17 pm, Wed May 16, 2012. by Erin Wiltgen Orange County now has a new head of the human resources department. Nicole Munford Clark will begin as human resources director at the end of June, ... |
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Swissport employee died of head injuriesMississaugaInvestigators with Human Resources and Skills Development Canada are probing the accident. Swissport provides ground handling service for various airlines operating at Pearson airport. Those services include loading and unloading aircraft and sorting ...and more » |
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Forces agree to share office functionsThis is StaffordshireThey have already started sharing finance and purchasing services, and from this autumn, human resources functions will also be pooled. Cheshire's Chief Constable Dave Whatton said: "When this idea was first talked about back in 2007, it wasn't just ... |
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Probe Mdluli says SexwaleThe New Age OnlinePublic Protector Thuli Madonsela has been asked by Human Settlements Minister Tokyo Sexwale to investigate the possible abuse of authority and state resources by former Crime Intelligence boss Richard Mdluli. "The objective... is to leave no stone ...and more » |
Power Line (blog) |
The Big Green Bigfoot Sighted AgainPower Line (blog)I can't believe I have to pass out Power Line's coveted Green Loser of the Week Award twice in one week, but the new World Wildlife Fund Living Planet 2012 report deserves as special bonus award this week. This is the ninth edition of this report, ...and more » |
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National Green Thumb Challenge Adopt-a-Plant Contest Winner AnnouncedPR.com (press release)Walpole, MA, May 19, 2012 --(PR.com)-- As part of the free Green Thumb Challenge program, GEF and Bonnie Plants, one of the program's sponsors and a national supplier of premium-quality plants, call on students and teachers to learn about the benefits ... |
New Straits Times |
GREEN: Protect our coral reefsNew Straits Times?Unfortunately, they're facing a threatened existence as a result of rising ocean temperatures and human activities, including destructive fishing and marine pollution.? Reef Check is a non-profit organisation and the world's largest international ... |
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World Bank Releases Little Green Data Book 2012The FINANCIAL... the Little Green Data Book includes an Adjusted Net Savings indicator?also known as ?genuine savings??which calculates the true rate of savings in an economy after taking into account investments in human capital, depletion of natural resources and ...and more » |
Green Business News
Bernews |
XL Names Eileen Whelley As Executive VPBernewsXL Group plc announced the appointment of Eileen Whelley as Executive Vice President, Chief Human Resources Officer. Ms. Whelley succeeds Elizabeth L. Reeves, who is retiring. Since 2006, Ms. Whelley has been Executive Vice President, Human Resources ...and more » |
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Related Human Resources articles:
Human ResourcesGuns Magazine - Para USA soldJune 1, 2012 -- Freedom Group Inc. announced it has finalized an asset purchase agreement to acquire certain assets of handgun manufacturer Para USA. In a...full story
Market Wire - Media Advisory/REMINDER: Human Resources and Skills Development CanadaMay 18, 2012 -- The Honourable Diane Finley, Minister of Human Resources and Skills Development, will participate in the G20 Labour and Employment Ministerial...full story
Market Wire - Minister Finley Highlights Youth Employment at G20 DiscussionsMay 18, 2012 -- The Honourable Diane Finley, Minister of Human Resources and Skills Development, participated in discussions at the G20 Labour and Employment...full story
Market Wire - Media Advisory/REMINDER: Human Resources and Skills Development CanadaMay 17, 2012 -- The Honourable Diane Finley, Minister of Human Resources and Skills Development, will participate in the G20 Labour and Employment Ministerial...full story
Market Wire - Government of Canada Supports Youth in Skilled TradesMay 16, 2012 -- Over the past three days, Skills/Competences Canada hosted approximately 500 youth from across the country as they competed in over 40...full story
Market Wire - Media Advisory: Human Resources and Skills Development CanadaMay 16, 2012 -- The Honourable Diane Finley, Minister of Human Resources and Skills Development, will participate in the G20 Labour and Employment Ministerial...full story
Market Wire - Government of Canada Increases Support for Part-Time StudentsMay 15, 2012 -- The Government of Canada has announced a new measure to help students and their families access and afford post-secondary education and...full story
Business Wire - Park Electrochemical Corp. Announces Appointment of Karen Kujawski as Vice President of Human Resources and Risk ManagementMay 15, 2012 -- MELVILLE, N.Y. -- Park Electrochemical Corp. (NYSE-PKE) announced the appointment of Karen Kujawski as Vice President of Human Resources and...full story
Business Wire - Mediacom Communications Appoints Italia Commisso Weinand Executive Vice PresidentMay 14, 2012 -- MIDDLETOWN, N.Y. -- Mediacom Communications today announced the promotion of Italia Commisso Weinand to Executive Vice President, Programming...full story
PR Newswire - SAP Mobile Apps Connect Businesses and Consumers - from the Boardroom to the Shopping CenterMay 14, 2012 -- B2E and B2C Mobile Apps from SAP and Expansive Partner Ecosystem Increase Worker Efficiency, Enhance Consumer Experience and Enable Commerce...full story
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