The Body in Motion
The Skeleton Water as a skeleton
The sea anemone has a
The digestive cavity is
filled with fluid
Two sets of muscles
1. Your bratty nephew threatens to hold his breath until he dies if he does not get his way. When he
holds his breath, does his blood pH go up or down? Why?
CO2 will build up, making his blood more acidic (decreasing the pH).
2. Name two systems that are