BONES AND MUSCLES

BONES AND MUSCLES

by Mehbin K

​WHAT ARE ORGANS?

THE BASIC EQUATION OF ORGANS IS:

​

CELLS-TISSUES-ORGANS-ORGAN SYSTEMS

​

BUT STILL WHAT IS ORGANS?

​AS WE READ ORGANS ARE MADE OUT OF CELLS

​AND OUR BODY CONSISTS OF SEVERAL ORGANS.

THEY WORK TOGETHER WITH OTHER ORGANS

THESE ORGANS WORK TOGETHER TO FORM THE ORGAN SYSTEM.

OKAY, NOW LET'S LEARN ABOUT THE DIFFERENT TYPES OF ORGAN SYSTEMS IN OUR BODY.

THERE ARE 8 TYPES OF ORGAN SYSTEMS

THEY ARE:​

1. ​NERVOUS SYSTEM

2. ​SKELETAL SYSTEM

3. ​MUSCULAR SYSTEM

4. ​CIRCULATORY SYSTEM

5. DIGESTIVE SYSTEM

6. ​RESPIRATORY SYSTEM

7. ​EXCRETORY SYSTEM

8. ​REPRODUCTIVE SYSTEM

​SKELETAL SYSTEM

SINCE THE CHAPTER IS ABOUT BONES, LET'S START WITH THE SKELETAL SYSTEM.

NOW, LOOK AT YOUR LEGS AND ARMS DOES IT LOOK THE SAME? LIKE, IS YOUR ARM LONG LIKE YOUR LEG? DEFINITELY NO.

​THAT'S BECAUSE BONES ARE OF DIFFERENT SHAPES AND SIZES. ALL THE BONES IN OUR BODY FORM A FRAMEWORK CALLED THE SKELETON.

HAVE YOU EVER WONDERED WHAT WOULD HAPPEN IF YOUR BODY DOES NOT HAVE A SKELETON?

WELL, YOUR BODY WOULD COLLAPSE, IT IS BECAUSE THE SKELETON GIVES THE BODY ITS SHAPE AND STRENGTH. IT ALSO PROTECTS IMPORTANT ORGANS LIKE BRAIN, HEART, LUNGS, etc.

​

​POINTS TO REMEMBER

• ​THE SKELETON OF AN ADULT IS MADE UP OF 206 BONES.

• ​AT BIRTH, YOU HAVE MORE BONES BUT THESE DO NOT HAVE JOINTS, AS YOU GROW TO AN ADULT.

• ​ THE INSIDE OF THE BONE OF CONTAINS A JELLY-LIKE SUBSTANCE CALLED THE BONE MARROW.

PARTS OF THE SKELETON​

1. ​ SKULL

2. ​BACKBONE

3. ​RIBS

4. ​LIMBS