Serotonin, like acetylcholine, is a neurotransmitter. However, if serotonin were released from the nerve cell above, it would not be able to communicate with the muscle cell. Why is this?

According to the national health and safety standards: guidelines for out-of-home care, what is the proper adult-to-child ratio for children younger than one year? a. one adult to one child b. one adult to two children c. one adult to three children d. one adult to four children