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Cells, Tissues and Organs: Structure and Function
In the last unit we looked at the basic structure of cells, and had a discussion about the fact that all cells have the same genome, but that each type of cell has some genes that are turned on or expressed, while others are turned off, or not expressed. This results in the over 230 types of cells that have different structures and functions.
In most cases these cells do not function alone, but end up located in groups where the cells fit together to form structures or function together to produce molecules and metabolic reactions. This is the case in the organ known as the Pancreas. As you work through the readings and the worksheet included in this section, you will see the connection between the pancreas, the different cell types of the pancreas, the impact of a disease like Cystic Fibrosis on this organ.
If you think back to Unit 1, you saw that cells come together to form tissues and tissues come together to form organs. The pancreas is an excellent example of how all of this works, with several differentiated cell types found to form several types of tissues in the pancreas, and each cell type and tissue producing different types of products which contribute to the overall functions of the pancreas.
The third document posted in this section is a background article on the characteristics of Cystic Fibrosis. You should read this article thoroughly so that you get some background on Cystic Fibrosis as a disease. You should be able to explain the basics of Cystic fibrosis as a disease. in a few sentences.
There will be questions on the next test about these documents. Make sure you answer all of the questions on the worksheet.