Aftershock: The Next Economy and America's Future by Robert B. Reich. âAftershockâ¦â is the interesting concise book that deals with how our economy came to be, how we can learn from history and some specific ideas on how we can address these problems.
Both the cardiac muscle and nervous tissue in the brain and spinal  cord have no functional regenerative capacity.
The bodies of organisms are organized into functional systemsâcells are organized into tissues, and tissues are organized into organs. Body systems carry out critical functions, such as locomotion, reproduction, digestion, and circulation. Cells are arranged in hierarchical levels of organization. 2  The lowest form of organization is the cell followed by tissues, organs, and organ systems. 3  A tissue is a group of similar cells in an organism working together to perform a particular function (e.g. nerve or muscle tissue).