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The Human Eye The human eye is an organ that reacts with light and allows light perception, color vision and depth perception. LEARNING OBJECTIVES Identify parts of human eye and their functions KEY TAKEAWAYS Key Points The eye is made up of a number of parts, including the iris, pupil, cornea, and retina. The eye has six muscles which control the eye movement, all providing different tension and torque. The eye works a lot like a camera, the pupil provides the f-stop, the iris the aperture stop, the cornea resembles a lens. The way that the image is formed is much like the way a convex lens forms an image. Key Terms pupil : The hole in the middle of the iris of the eye, through which light passes to be focused on the retina. aperture : The diameter of the aperture that restricts the width of the light path through the whole system. For a telescope, this is the diameter of the objective lens (e.g., a telescope may have a 100 cm aperture). The human eye is the gateway to one of our five...

Physiology of Anger Like other emotions, anger is experienced in our bodies as well as in our minds. In fact, there is a complex series of physiological (body) events that occurs as we become angry. Emotions more or less begin inside two almond-shaped structures in our brains which are called the amygdala. The amygdala is the part of the brain responsible for identifying threats to our well-being, and for sending out an alarm when threats are identified that results in us taking steps to protect ourselves. The amygdala is so efficient at warning us about threats, that it gets us reacting before the cortex (the part of the brain responsible for thought and judgment) is able to check on the reasonableness of our reaction. In other words, our brains are wired in such a way as to influence us to act before we can properly consider the consequences of our actions. This is not an excuse for behaving badly - people can and do control their aggressive impulses and you can too with some practic...

Introduction A virus is a micro infectious agent, which is found as parasite in the living cells of other organisms. Virus replicates swiftly inside the living cells of other organisms. Virus is a Latin term meaning ‘poison’ and other ‘noxious’ liquids. Viruses can infect any type of life forms, ranging from animals and plants to microorganisms, including bacteria and archaea. The study of viruses is known as virology. Virus is first discovered by Dmitri Ivanovsky in 1892. Virus has the properties of living as well non-living. One of the living properties is – virus has either DNA or RNA (never both). One of the non-living properties is – virus has no protoplasm. Types of Virus Based on parasitic nature, virus is categorized as − Animal Virus Plant Virus Bacterial Virus Archaeal Virus Viral Diseases in Human Being Following are the list of diseases caused by virus in Human beings − Chickenpox Encephalitis Influenza (or Flu) Herpes (skin disease) Human immunodeficiency virus (HIV/AIDS) ...

They might make you cry, but you will only laugh in the long run. Such wonderful the benefits of onions are. And some of them are downright surprising. Keep reading this post. And one thing’s for sure – you are going to thank us. No doubt. Table Of Contents What Are Onions? What Is The History Of Onions? What Are The Different Types Of Onions? Are Onions Good For You? Is It Better To Eat Onions Raw Or Cooked? What Is The Nutrition Profile Of Onions? What Are The Health Benefits Of Onions? What Are The Benefits Of Onions For Skin? What Are The Benefits For Hair? How To Select And Store Onions How To Incorporate More Onions Into Your Diet Any Popular Onion Recipes? How To Use Onions For Cooking/Eating Where To Buy Onions Any Cool Facts About Onions? What Are The Side Effects Of Onions?

remedy for infections, such as the cold or flu. According to the folk remedy, if you come down with a cold or the flu, all you have to do is slice a red or white onion into rounds, place them on the bottoms of your feet, and put on a pair of socks. Leave the socks on overnight as you sleep. In the morning, you’ll wake up cured of your illness. The origin of the remedy This remedy may originate back to as early as the 1500s, according to the  National Onion Association , when it was widely believed that placing raw, cut-up onion around your home could protect you from the bubonic plague. In those days, it was thought that infections were spread by miasma, or poisonous, noxious air. The miasma theory has since been replaced with the evidenced-based germ theory. The general idea of putting onions in your socks may also stem from the ancient Chinese medicinal practice of foot reflexology. The nerves in the feet have been a focal point of Eastern medicine for thousands of years and are ...

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