<span>The correct answer is Platelet. Platelets are actually thrombocytes which are found in blood and are responsible for clotting the blood in case of an injury. They are recognizable easily for not having nuclei. T-cells, B-Cells and Phagocytes are all types of white blood cells because the differences between them are minor.</span>
The stomach lining replaces mucus itself every few days
ATP-driven pumps will move Ca ++<span> out of the sarcoplasm back into the SR. This results in the “reshielding” of the </span>actin<span>-binding sites on the thin filaments. Without the ability to form cross-bridges between the thin and thick filaments, the </span>muscle<span>fiber loses its tension and relaxes.</span>
