Post 4: Chapter 3 Question 3

The body has many different cells and they all have different abilities that keep the human body alive and healthy. Fibroblast cells play an important role in keeping the body in one piece as they connect body parts. Fibroblasts have rough ER and a Golgi apparatus to create and secrete protein building blocks. Epithelial cells cover and line body organs. They are hexagonal-shaped, which makes it able for the cells to pack together in sheets. The skeletal muscle cells and smooth muscle cells have the function of moving organs and body parts. These cells are filled with contractile filaments, making it capable to shorten forcefully and move the bones or change the size of internal organs. Fat cells store nutrients. They are produced by a large lipid droplet in its cytoplasm. Macrophage or phagocytic cells fight disease as they can extend pseudopods to crawl through tissue to reach infection sites. Nerve cells or neurons have long processes for receiving messages and transmitting them to other structures in the body. Oocyte cells, found in females, are the largest cells in the body. They are egg cells that contain copies of organelles for distribution to the daughter cells when a fertilized egg becomes an embryo. Sperm cells, found in males, are long and streamlined so that they can swim to the egg for fertilization. All in all, there are many cells and all have unique and different purposes. There are cells that are needed for survival and there are some cells that depend on others. Every cell is important and is necessary for health.