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.
Body Structure and Symmetry. Mollusks have a very distinct body structure of a significant cavity used for breathing and excretion. Mollusks have a body without a cavity, has more than two layers of cell layers, tissues and organs. Mollusks are soft bodied animals with three main regions: head, visceral mass, and foot. The head of the mollusk contains the sense organs such as the brain. It has a pair of eyes, a mouth, sensory and nervous structures.