Our skin is a protective layer between the body and its external environment.It works as a sensor to mo niter changes in exterior physical conditions.Different kinds of situations such as heat,cold,pain and pressure,provoke different types of nerve cells,in the skin.Thus ,the brain is sent the useful information of the happenings,outside the body,and it in turn, commands an action to different parts of the body.For example,when we happen to hold a flower with a thorn and detect pain,message from the arm are sent to the spine.A spine sends this message to the brain and brain command the hand muscles to throw the flower.All this happens in less than one second.Thus , these nerve cells prevent our body from damage or injury.Our skin feels the pressure and the pain,so we feel when our finger is cut by knife.There are millions of microscopic nerve endings under the surface that detect light touch,heavy presssure,heat,cold and pain.Our sense of touch is more rifined than any divice ever created.When we touch something,we send a message to our brain at 124mph,.
While surfing the Web, these commands could help you and are absolutely worth learning. By making repetitive motions faster, web surfing becomes so easy and pleasant! The following shortcuts can be work with desktop versions of Chrome, Firefox, and IE. CTRL-T to launch a new browser tab page. Tabbed pages are very useful: they let you open multiple web pages simultaneously without the same memory load as a full browser window. Simply press CTRL-T to launch a new tab. Related: use CTRL-Page Up and CTRL-Page Down to navigate between the tabs. CTRL-Enter to type 'www.' and '.com' Once you ...
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