Skin is the main barrier between internal organs and the outside environment. the outer layer of skin is composed mostly of epithelial cells. which is a characteristic of epithelial cells that makes them ideal for providing this type of protection?

Which sequence correctly shows the path of carbon dioxide during repiration?

1. which of the following is correct regarding opiates/opioids: a. they all have a natural component as a starting pointb. they have low addiction possibilitiesc. methadone binds to some of the same receptorsd. a and care correcte. all are correct

Anurse is caring for a 42-year-old client who is scheduled for an amniocentesis during the fifteenth week of gestation because of concerns regarding down syndrome. what other fetal problem does an examination of the amniotic fluid reveal at this time?