Thursday, September 3, 2015

Tissue Lab Relate and Review

Through this lab, I was able to get a really good visualization of what the cells look like and the location of their nuclei, as well as how the cells all interact together. One cell that I thought was particular interesting was the human bone cell, which showed a beautiful black center with lighter gray patterned regions around it. The dark center of the bone was where the blood vessel would flow through, and it was surrounded by the dense, hard gray bone around it. See below for a picture:


The differences between the different tissue types is the shapes of the cells. For example, connective tissue tends to be more l=columnar in shape, and is often very compactly packed together in groups. This makes sense because connective tissues cannot have holes in them, as they have to completely wrap around organs and fill space in between the different organs. Nerve cells are much rounder and tend to be in random circular clumps. They have tiny axons and dendrites, and they can be more spaced out because information can be passed between cells efficiently between dendrites of cells. Muscular cells are often larger and appear more branched, with multiple nuclei and striations, as seen in the human smooth muscle. They need multiple nuclei and lots of space (thus there is branching) because they must code lots of proteins and have space to contract.





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