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 published by Chez Introduction This is all about 1.Nervous system and2. Nervous coordination    THE NERVOUS CORDINATION             Nervous coordination/ Transport system is the process by which the different parts of the body of an organism are harmonised so that they can work together to achieve a definite objective. Nervous  coordination can be achieved by two communicating systems  ..., namely  1. Endocrine system(hormonal system) 2. The nervous system    NB:  Endocrine system are chemical messages that flows in the blood  stream,   while Nervous system flows in the nerves. THE NERVOUS SYSTEM:    This consist of the brain,  the spinal cord and nerves. it is devided into two major parts , which are  1. Central nervous system (CNS) 2. Peripheral nervous system ( PNS)  THE CENTRAL NERVOUS  SYSTEM :   This consist of the brain and the spinal cord . THE ...

published by SWOT Introduction In this article of set theory,we are going to solve a problem on Venn diagram (So sorry,image preview for Venn Diagram not available yet,but don't worry,you will understand it without the diagram). So, let's go over to problem of today:  • In a recent survey of 400 students in a school,100 are listed as smokers and 150 as Chewers of gum,75 were listed as both smokers and Chewers of gum. Find out how many students are neither smokers nor Chewers of gum. (get a rough paper to solve as you study) SOLUTION: U = universal set = number of students, Let S = Smokers        C = Chewers of gum        N = students that are neither S nor C Then S = 100 , C = 150 , S intersection C = 75 , N = ?. Since the total number of students who are smokers ONLY is the number of students who are smokers Minos number of students who are smokers and also a chewer of gum. That is: S = n(S) - n(S п C),  = 100 - 75, S = 25 and...