The First Taxonomy of Educational Objectives: Cognitive Domain. The idea of creating a taxonomy of educational objectives was conceived by Benjamin Bloom in the 1950s, the assistant director of the University of Chicago's Board of Examinations. Bloom sought to reduce the extensive labor of test development by exchanging test items among universities.
Cardiac muscle tissue is made up of many interlocking cardiac muscle cells, or fibers, that give the tissue its properties. Each cardiac muscle fiber contains a single nucleus and is striated, or striped, because it appears to have light and dark bands when seen through a microscope.ardiac muscle tissue is an extremely specialized form of muscle tissue that has evolved to pump blood throughout the body.
An isolated cardiac muscle cell, beating Cardiac muscle (heart muscle) is striated muscle (striped muscle) in the walls of the heart. It makes up the tissue called the myocardium. It is involuntary: a person cannot control it consciously. Cardiac muscle is one of three main types of muscle, the others being skeletal and smooth muscle. The cells that make up cardiac muscle have one (74%) or two (24.5%) nuclei. The myocardium forms a thick middle layer between the outer epicardium layer and the inner endocardium layer.