The lymph vessels have a structure within that keeps the lymph moving in one direction and prevents backflow, this structure is called a A. door
B. valve
C. closing
D. gate

Anurse is teaching a client about nitroglycerin sublingual tablets. which of the following statements by the client indicates an understanding of the teaching? a. “this medication has a slower onset than a nitroglycerin pill that is swallowed.” b. “i should take this medication as soon as pain begins.” c. “i can crush this medication for faster relief.” d. “this medication should completely dissolve within 15 minutes.”