Asifbiologyblog

  In December 2019 there was a cluster of pneumonia cases in the city of Wuhan in China. Some of the early cases had reported visiting or working in a seafood and live animal market in Wuhan. Investigations found that the disease was caused by a newly discovered corona virus the disease was subsequently named Covid 19 Covid 19 spread within China and to the rest of the world on 30 January 2020 the World. Health Organization declared the outbreak a public health emergency of international concern in this topic we'll take a quick look at what is currently known about Covid 19?keep in mind that this is a new disease and what's known is rapidly evolving and might change in the future. So what is a corona virus? Corona Viruses are a large group of viruses. They consist of a core of genetic material surrounded by a lipid envelope with protein spikes, this gives it the appearance of a crown in Latin is called Corona and that's how these viruses get their name. There are di...

Today we are going to talk about the membranous coverings of the central nervous system        Right there are three types of membranes which are enveloping around the brain in the spinal cord right let me show you that by a simple diagram first of all suppose here is your central ner vous system of course you'd recognize these structures right now the first covering which is very very intimately covering the central nervous system is Piatt met by a metal is the connective tissue layer which is highly vascular it is highly vascular very delicate very thin very closely covering all the surfaces of brain and spinal cord right and this paya meta this moves throughout with the central nervous system right so we can say that this black layer is pyometra what is meant by the paya matter what is meant by the word paya and mater just who'll tell me anyone yes , very good  paya means soft and mater means mother so it's a soft mother taking care of the central nerv...