The+Amazing+Human+Body.

Stephanie Gutierres. Period 2. The Human Body!

The human body is a masterful machine and considered one of the most complex organisms on the Earth. Each individual body is composed of billions of microscopic parts that work together. Each part works independently to benefit the overall being of the body. The body is composed of four different units: Cells, Tissues, Organs and Systems. To begin to understand the body we must first understand the smallest component the cell. Each human begins as a single cell that divides over time to develop into a complete person. Each cell is able to replicate itself and is alive. Below is a labeled diagram of an animal cell. This is a basic cell; each part of the human body has specific cells that make up that organs, bones, muscles, and brain.

Within the cell there are many different parts, these different parts are termed //organelles (tiny// //organs)//. The //Cell Membrane// separates the cell from its surroundings, protects the cell from changes in the physical and chemical environment, and determines what comes in and out of the cell, just like the doors and windows of our homes determine what comes in and out of our house. The //Cytoplasm (Cytosol)// of the cell is the jelly like material in which all other parts of the cell can be found, this is similar to the gooey stuff in pies that surround the fruit. The //Nucleus// of the cell is the brain and considered the most important part. The //Nucleolus// a small round body inside of the nucleus of a cell and is composed of protein and RNA that are associated with the formation of ribosomes. //Ribosomes// are the structure that uses genetic instructions to link amino acids into chain formations known as proteins. The //Nuclear Envelop// is a double-sided membrane that surrounds the Nucleus and Nucleolus. The //Mitochondrion// is the powerhouse of the cell and is responsible for converting nutrients into energy, just like the power plant that supplies your house with electricity. Cells that have high-energy demands, such as a muscle cell, have more mitochondria. The shape of mitochondria is very similar to a kidney bean. //Endoplasmic Reticulum// is a network of tubes that process, manufacture, and transport materials. The Endoplasmic can either be smooth or rough, if it is rough it has ribosomes attached to it, if it is smooth there are no ribosomes attached. The //Golgi body// is a network of stacked sacs found within the cell that stores, packages, and distributes the proteins and lipids that are made in the endoplasmic reticulum. //Centrioles// are two-part dowel shaped structures that are located in pairs near the nucleus and they play an important part during cell reproduction. The //Vacuoles// this organelle aids in intercellular digestion and waste removal, in other words this is the garbage can of the cell. //Lysosomes// are basically a part of the cell that recycles molecule; really this is the garbage disposal of the cell. The //Cytoskeleton// provides the framework of the cell just like the skeleton provides our frame
 * //Cell parts and functions://**

