In which trimester does the following occur?

the embryo is attached to the placenta by the umbilical cord, and the placenta makes contact with the uterus.

first
second
third

Which set of symptoms describes the short term effects of marijuana

What pharmacological agent serves to reduce the frequency and severity of seizures?

Asoccer mom is driving her 75 year old grandmother and her 9 year old daughter home after the game. the grandmother and daughter were both in the back seat and both were wearing their seat belts. a car ran a red light in front of them, causing them to t-bone that car on the passenger side. fortunately there were no serious injuries, but the grandmother did sustain several rib fractures. the mother, daughter and driver of the at-fault car were shaken up but unhurt. what are some possible reasons that the grandmother sustained rib fractures while the other victims did not?