Your friend recently visited her doctor and was telling you about her visit. She said her
doctor didn't know what he was talking
about. First, the doctor said her heart was in
her ventral cavity, then later said it was in
her thoracic cavity and before she left he
said it was in her pericardial cavity. You
know your friend's doctor isn't wrong in what
he said. In the box to the right summarize
what you would say to your friend to explain
that her doctor really does know what he is
talking about