Cells have specific functions within the body from "summary" of Human Biology by Cecie Starr,Beverly McMillan
In the human body, cells play essential roles in maintaining the overall function and balance of the organism. These microscopic units are specialized to perform specific tasks that contribute to the proper functioning of various tissues, organs, and systems within the body. Each type of cell is uniquely structured and equipped to carry out its designated function, whether it be providing structural support, producing energy, facilitating communication, or defending against pathogens. For instance, muscle cells are designed to contract and generate force, allowing for movement and locomotion. These cells contain specialized proteins that enable them to shorten and lengthen in a coordinated manner, resulting in muscle contractions. On the other hand, nerve cells, or neurons, are specialized for transmitting electrical signals throughout the body. They have long extensions called ...
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