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Vaccines:Shield of Nature Against Diseases

INTRODUCTION  Vaccines are known as the most powerful and life-saving weapons in the battle between human beings and infectious diseases. They are known for transforming the public health and rewriting the story of human survival by wiping out deadly viruses like smallpox and also prevents millions of childhood death every year. Instead of their remarkable success,vaccines are mostly misunderstood. In this blog post,we will delve into the world of vaccines by knowing about their working,types and why they are so important for the humankind. Let’s explore the enchanting science, history, and future of vaccines — nature’s invisible shield against disease. Sup HISTORY OF VACCINES The credit for that invention of vaccines goes to an English physician named Edward Jenner approximately more than 200 years ago. In the year 1796,he observed that the nilkmaids who contracted cowpox which is a mild diseases in cows,were not affected by the deadly smallpox which means that they ...

A Fascinating Creation:Human Body Part-II

>RESPIRATORY SYSTEM  -It is a biological system consisting of organs and structures that are used in gaseous exchange in human beings. -This gaseous exchange is primarily concerned with inhalation of oxygen and exhalation of carbon dioxide. -It also aids in the process of olfaction that is smelling by activating the olfactory receptors during inhalation of oxygen. -This system includes the following parts: • Nose: It has external nostrils with tiny hair follicles covering its internal lining for purification of the air entering the body through nostrils. • Larynx:It is found in front of the neck and consists of two cartilaginous chords which are responsible for vocals as well as aiding respiration. Hence, it is also informally called the voice box.  • Pharynx : It is a wide hollow space where nasal chambers open and a common passage for air and food.The cartilaginous flap called epiglottis ensures the food from entering the Larynx by covering it hence ensuring ...