Brain

    Brain

        The brain controls the nervous system. The brain functions include emotion, thought, memory, speech, sensory integration and reception, coordination and muscle control. The human brain has billions of nerve cells called neurons which are connected to more neurons though synapses. There are three main parts to the brain: the brain stem, which is connected to the spinal cord and controls heartbeat, breathing and digestion; the cerebellum, which controls coordination and balance; and the cerebrum, which controls senses including touch, vision and hearing.
    Heart

        The heart is the organ that keeps the blood flowing through the body's blood vessels and arteries with rhythmic and repeated contractions. The upper two chambers in the heart are the right and left atria, and the lower two chambers of the heart are the right and left ventricles. The left and right sides of the heart are divided by the septum. The human heart has four valves that regulate blood flow. The tricuspid controls the blood flow between the right ventricle and right atrium and the pulmonary valve controls the blood flow from the right ventricle to the pulmonary arteries, which in turn carry the blood to the lungs for oxygenation. The mitral valve carries oxygen-rich blood from the lungs to the left ventricle and left atrium. The aortic valve is the largest artery that delivers blood to the entire body.
    Lungs

        Located in the chest cavity, the lungs provide oxygen to the blood stream when air is inhaled and exhales carbon dioxide. After the blood is oxygenated, it is returned to the heart via the pulmonary vein. The right and left sides of the lung have the anterior lobe, medial lobe and posterior lobe. The right side has the accessory lobe, which is very small and associated with the right-side posterior lobe.
    Kidneys

        The kidneys maintain the chemical balance in the body by excreting excess fluid and waste products in the form of urine. The human body can survive with one kidney, but when one or both kidneys are not functioning correctly, dialysis is needed to artificially simulate kidney functions in ridding the body of fluid and waste removal.
    Liver

        The liver maintains a proper level of glucose in the blood, filters harmful substances, produces urea and breaks down fats in the body. The basic function of the liver is to keep the composition of the blood the same as it needs to be in a healthy person.


Read more: Important Parts of the Human Body | eHow.com http://www.ehow.com/list_7210053_important-parts-human-body.html#ixzz2KNjPMHOo

Free Antivirus

Windows 7 to keep your computer safe against various virus threats and hackers.
1) Microsoft Security Essentials : Microsoft Security Essentials provides real-time protection for your home PC that guards against viruses, spyware, and other malicious software. Microsoft Security Essentials is a free download from Microsoft that is simple to install, easy to use, and always kept up to date so you can be assured your PC is protected by the latest technology. For more details and how to download MSE, you can check our article totally dedicated on MSE.

2) Avast Free Antivirus : avast! antivirus software is available for free and commercial use. It provides complete virus protection for your computer. Antivirus engine is complemented by anti-spyware, firewall and antispam modules to protect you against phishing schemes, identity theft and internet-distributed web viruses. Automatic updates for greater user convenience and safety.

3) AVG Free Antivirus : AVG has been around in the Antivirus market from ages and gained lot of loyal users to their kitty. They also provide upgraded version which is very costly but I believe that their free Antivirus program is great for users having personal computers. AVG user interface is pretty simple and it takes a minute to install on your computer.

4) Avira AntiVir Personal : One of the simple to use and light Antivirus software in the market. It works perfectly fine to detect virus, spyware, rootkit threats. The best part of Avira is that it is quiet outstanding in terms of finding malware. Few false positives about Avira is that it does not inlude E-mail scanner in free version, but if you open any infected E-mail, it comes again into action.

5) Panda Cloud Antivirus : The first free cloud antivirus against viruses, spyware, rootkits and adware. Panda Antivirus Beta3 supports Windows 7 (32 and 64bit). .  The antivirus carries out BackgroundScan by deactivating many unnecessary operations.

6) Comodo Firewall + Antivirus : Comodo Firewall and Antivirus is now Comodo Internet Security.Comodo Internet Security 4.0 includes a built-in sandbox which combines file system/registry virtualization and least-privileged user account principle in order to combat unknown malware.

7) ClamWin Free Antivirus : ClamWin is a Free Antivirus program for Microsoft Windows 7 / Vista / XP / Me / 2000 / 98 and Windows Server 2008 and 2003. It comes with an easy installer and open source code. Please note that ClamWin Free Antivirus does not include an on-access real-time scanner. You need tomanually scan a file in order to detect a virus or spyware.

8 ) Free eScan Antivirus Toolkit Utility : eScan Antivirus Toolkit 12.x is compatible with Windows 7 – 32 & 64-bit OS. eScan Antivirus Toolkit is a FREE utility that enables you to scan and clean Viruses, Spyware, Adware and any other Malware that may have infected your computer. The eScan Antivirus Toolkit requires no installation and can be run directly from anywhere, on your computer, USB Drive or from a CD ROM. It can also be run even if you already have other antivirus software installed on your computer.

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