Which body system sends electrical signals to all other body systems? Also does someone want to talk

Synovial fluid serves as a lubricant to prevent friction between two parts that move on each other such as in the case of and bones.

What does cooper mean when she says “…non-nutrient foods are really, really cheap which is why i say it’s a social justice issue.” (7: 50 in video)

Kelly is 33 weeks pregnant and her doctor has scheduled her for a procedure to remove a small amount of fluid to check for the health of the fetus. the procedure is called .