What happens in your mouth?

How is blood collected for procedures requiring serum? What is the relationship between digestion and enzymes? Which perspective is most directly involved with the study of how brain development might affect behavior? When did they start using metal for hip replacements? To be considered an individual with a disability? My blood type is A- while my husbands is 0 positive . Will this cause problems when trying to get pregnant and through the pregnancy? What would cause stump swelling? Does the kicking team get any points if the ball lands in the end zone and the receiving does not down the ball and the kicking team does? What leads people to depression? What part of the nervous system that regulates heart beat digestion? You are pregnant and throw up everything you eat and drink? How using of comdoms protect from HIV? How many people have been blinded by being spat in the eye? 2 weeks after an appendectomy have a high platelet count What could this mean? What if you have warm breasts what does that mean? How do you tell someone it is none of their business who your baby's father is? Where in a mammal's body does oxygen enter the bloodstream? How long does bronchitis last outside the body? Which syndrome does this unborn have? What is QRS detection?