The only other NFL-AFL death that has been attributed directly to a hit on the field also occurred in the fledgling AFL. New York Titans rookie offensive guard Howard Glenn, 24, died hours after a game in October 1960 in Houston, the cause of death also cited as a broken neck.
Human is a complex organisms because humans are made up of trillion of cell and a lot of system and organ .Some of the major systems are blood circulatory systems, the skeletal system, the digestive system, the nervous system and the respiratory system.
Key points. 1  Humansâand other complex multicellular organismsâhave systems of organs that work together, carrying out processes that keep us alive. 2  The body has levels of organization that build on each other. Cells make up tissues, tissues make up organs, and organs make up organ systems.