Of Mice And Men- Curleys Wife

Cells
The human body is do up of millions of tiny cells that croupe only be seen under a microscope. They vary in size and shape and have different moulds, but both cell in the body has three features in habitual:
* The cell membrane, which is the outer covering of the cell
* The nucleus, which controls the cells activities.
* Cytoplasm, a fluid-like material.
One of the substances in the nucleus is DNA. This is the material that provides both t6he randomness about your genetic make-up that you have inherited from your parents and grandparents. This lead determine things like the colour of your eyes and hair and testament influence how tall you get out be.
As an embryo grows within the uterus, its new cells will develop differently depending on what pick of the body they will become and what functions they will perform. For interpreter, some will become musculus cells and others will become nerve cells. This marrow that they will look and act differently. It doesnt matter what function each cell has, they all need oxygen and victuals in the form of glucose so that they can release the get-up-and-go they need.
Tissues
Cells group together to form tissues. A tissue is a group of cells of the same structure that perform the same function. An shell of this is skin tissue, which is made up of lots of skin cells.



They all work together to provide a waterproof contraceptive covering for all the internal organs of the body. Another example is a heart muscle, which is strong enough to beat for a whole lifetime.
Organs
Organs are made up of different tissues that work together to carry out a detail function. An example is the heart, which is made up of different types of tissue. The heart muscle pumps line of products around the body, but it has its own system of blood vessels too: arteries to deliver oxygen and nutrients to the muscle, and veins to remove carbon dioxide from it. in that respect may be several different organs in one whole body system.
Systems
A system is made up of...If you want to get a full essay, magnitude it on our website: Orderessay



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