But the chaos of the mundane and the extreme can be well contained and addressed by keeping these four frames in mind. Jeffrey Benson is the author of ASCD's Hanging InâStrategies for Teaching the Students Who Challenge Us Most and the often cited Educational Leadership article, 100 Repetitions..
The advantage of having body cavities is that one's organs are protected by skin and bones and are shielded from direct impact and injury.he body cavity is to hold your organs. (liver, spleen, pancreas, stomach, intestines, etc. It also provides a route for your aorta to your lower extrimities.
Gastrovascular Cavity. Gastrovascular Cavity: As the name implies, this has a role in both the distribution of particles and nutrients to all areas of the body as well as having a role in digestion. Organisms that belong to 2 main phyla â the Platyhelminthes and the Cnidaria â have gastrovascular cavities. The cnidarians that are symmetrical have a body that is sac-like in 2 layers that are distinct â the epidermis and gastrodermis â with a jelly type layer called the mesoglea in between. Digestion that is extra cellular begins within the center cavity of the body that is sac-like.