How do Organs Serve the Needs of Cells?
(S7L2.d)

In short, each organ has a specific task to do in an organism. For example, the digestive system breaks down food into carbohydrates, vitamins, and proteins. Without our digestive system, our cells could not use the food we eat. The circulatory system is also very important. It distributes oxygen (which is possible with the help of the respiratory system), water, and nutrients to the cells, while taking away their wastes. Our nervous system allows our body to react to anything that happens, allowing for our cells to be protected. The skeletal system protects our organs, and the cells that make them. Basically, all the organs and their systems allow the cells to do what they need.

How are Cells Organized?

(S7L2.c)

Simple. Organelle > Cell > Tissue > Organ > Organ System > Organism

And that's all of Cells/Body Systems! Hope you enjoyed the entire review!

-Jerome