The average number membership of an American mosque was 1,248 in 2011, which counts Muslims who at least pray for Eid-al-Fitr, one of two major holidays, at the mosque. That's down from 1,625 in 2000 and is likely because of a growth in the number of mosques.
Platelet Function The role of blood platelets is to clog broken blood vessels to prevent the loss of blood. Under normal conditions, platelets move through blood vessels in an unactivated state.
After watching this lesson, you will be able to: 1  Explain how red blood cells contribute to the functions of blood. 2  Describe the function of each of the five types of white blood cells. 3  List a mnemonic device to remember the white blood cells. 4  Summarize the function of platelets.