The 4 Main Tissues in the Human Body

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Organisation of the human body This presentation is to illustrate how the human body is organised, the structure and functions of main body components. The human body is made up of around 3.7 trillion cells with their own characteristics which carry out a number of actions and processes that allow us to function. This diagram illustrates various components of a human cell Cell membrane: This is the outer layer of the cell which holds everything in place. It controls what goes in and out of the cell. Nucleus: This is the central part of the cell. It is usually darkest part of the cell because it absorbs dyes very easily. It controls chemical reactions within the cell. Chromosomes: There are 23 pairs of chromosomes within the human body. There are two types of chromosomes (male or female) X and Y, also known as the sex chromosomes. The chemical responsible for inherited characteristics and gender. They are found within DNA and protein seen in a dividing cell. Cytoplasm: The cytoplasm refers to all cell material outside the nucleus but within the cell boundary. This is a gel like fluid where chemical reactions take place. Mitochondria: Is circular or rod shape bodies found within the cytoplasm and helps to releases energy. Every cell in the body has at least one thousand of these. They have double layered membrane. Endoplasmic reticulum: Commonly known as ER Endo means within and Recto means a network – A network within a cell interior There are two variations: Rough – has tiny black bodies known as ribosomes. Its function is making cell protein and acting as a temporary storage area. Smooth – has no ribosomes and is involved in the breaking down of fats (Lipids). Ribosomes: Tiny black bodies attached to the rough endoplasmic reticulum. They

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