Biological facts

    Cells are th e basic unit of life . Every living organisms are made up of cells.Human body is made up of trillions of cells .Everyday many cells are dying and regenerating in our body without our acknowledge.We never think about the microscopic changes or events happening in our body . Cells house the biological machinery that makes the proteins, chemicals, and signals responsible for everything that happens inside our bodies. Discovery of cell   As we all know Robert Hooke discovered cells .But we don't know the story behind the discovery.The main reason behind the discovery of cells is due to improvement in compound microscope. His  microscope  used three lenses and a stage light, which illuminated and enlarged the specimens.       He observed a piece of cork under this microscope.He then observed many compartments like structures and called it ' CELLS '. Hooke detailed his observations of this tiny and previously unseen world in his bo...

    It is a common experience of all during the afternoon naps or sometimes during night to feel this horrible thing called HYPNIC JERKS.By reading this term we all get confused what am I talking about.It is nothing but the feeling of as if the foot slips or sometimes sense of sudden fall from somewhere during the initial stage of sleep.Then we awake suddenly and our heartbeat increases, we start to sweat profusely.    It is also called as Sleep starts which is an involuntary muscle contractions.Most of the times it is painless ,although some people do report a painful sensation. What are the causes ?    Various factors like emotional stress, physical exercise and excess use of caffeine and other stimulants,bright lights ,sudden noise causes sleep strarts.   A study at the University of Colorado suggested that it is evolutionary, stretching back to our primate ancestors." A reflex of the brain's misinterpritation of muscle relaxation with the onse...

        Cr ying is an important safety valve, largely because keeping difficult feelings inside — what psychologists call repressive coping — can be bad for our health. Studies have linked repressive coping with a less resilient immune system, cardiovascular disease, and hypertension, as well as with mental health conditions , including stress, anxiety, and depression. Crying has also been shown to increase attachment behavior , encouraging closeness, empathy, and support from friends and family .       Scientists divide the liquid product of crying into three distinct categories: reflex tears, continuous tears, and emotional tears. The first two categories perform the important function of removing debris such as smoke and dust from our eyes, and lubricating our eyes to help protect them from infection. Their content is 98% water.      As the water in the tears evaporate, a beautiful never ending...