Managed care An event that is unforeseen, unexpected, and unintended. Neurology See Cerebrovascular accident. Public health An unintentional and/or unexpected event or occurrence that may result in injury or death. RTAs/MVAs are the most common cause of accidental death in developed countries.
Hemoglobin is the oxygen-carrying component in red blood cells.  Hemoglobin is a protein that has an iron molecule. Aside from red  blood cells, there are white blood cells, â¦ which also are important  components of the blood.aking the world better, one answer at a time. In order for cellular respiration to take place, mitochondria must have oxygen. Mitochondria are the building blocks of the cell, and the cell cannot survive without it.
The cells that make up the digestive, muscular, skeletal, reproductive, and excretory systems all need oxygen from the respiratory system to function, and the cells of the respiratory systemâas well as all the other systemsâneed nutrients and must get rid of metabolic wastes.