(9).INTRODUCTION TO HUMAN BODY SYSTEMS

As we state early,Human beings are probably the most complex organisms on this planet. Imagine billions of microscopic parts, each with its own identity, working together in an organized manner for the benefit of the total being. 

The human body is a single structure but it is made up of billions of smaller structures of four major kinds:

► Cells:

Cells have long been recognized as the simplest units of living matter that can maintain life and reproduce themselves. The human body, which is made up of numerous cells, begins as a single, newly fertilized cell.
for more imformation about cell go back to the earlier turtorial by clicking here

► Tissues:

Tissues are somewhat more complex units than cells. By definition, a tissue is an organization of a great many similar cells with varying amounts and kinds of nonliving, intercellular substance between them. 

► Organ:

Organ are more complex units than tissues. An organ is an organization of several different kinds of tissues so arranged  together  to perform a special function. For example, the stomach is an organization of muscle, connective, epithelial, and nervous tissues. Muscle and connective tissues form its wall. epithelial and connective tissues form its lining.and nervous tissue extends throughout both its wall and its lining.

► Systems:

Systems are the most complex of the component units of the human body. A system is an organization of varying numbers and kinds of organs so arranged  together to perform complex functions for the body. Ten major systems compose the human body:

1).Skeletal SYSTEM

2).Muscular SYSTEM3).

3).Nervous SYSTEM 

4).Endocrine SYSTEM

5).Cardiovascular SYSTEM

6).Lymphatic SYSTEM

7).Respiratory SYSTEM 

8).Digestive  SYSTEM

9).Urinary SYSTEM

10).Reproductive  SYSTEM.

These are the systems that regulate our body to function normally. And a failure or disorder of one of them,will makes us falling I'll.we will explore each of them  in deep and in simple guidelines.if you likes to read these turtorial in hausa version, visit my other hausa-turtorial-website, at,

www.kimiyyadahausa.blogspot.com.
And leave your comment,in the below box.