What organ is the least sensitive to a lack of blood?
The term most often used is infarction for a complete lack of blood flow to a particular organ (most often used when referring to a muscle such as the heart or skeletal muscle), or ischaemia for severely reduced blood flow. If you are simply referring to a reduced amount of oxygen then tissue hypoxia may apply.
Red blood cells are required to traverse very small capillaries in your extremities. For this reason, we call them "deformable" cells. In order to be deformable, red blood cells lack many organelles other cells typically have, including mitochondria in order to bend and fit through your capillaries. However, the lack of mitochondria also means that red blood cells do not undergo oxidative phosphorylation for their energy needs and do not have many mechanisms to combat…
hmmm.... heart is an organ which defintely does not need rest as such but when you stay awake late the heart has to ssupply blood to vital organs plus extra oxygen for other actions happening at that time . yes lack of sleep may cause palpitations and irregular heart beats so make sure to take plenty of sleep :0
The term is hypoxemia lack of oxygen in the blood means that the hemoglobin oxygen complex is not being formed properly the oxygen hemoglobin complex is HbO4 if less than four oxygen molecules combine with one hemoglobin then it is called oxygen deficiency in the blood It can also be caused by a lack of red blood cells-anemia