Respiration is a series of reactions in which energy is released from glucose glucose: A simple sugar made by the body from food, which is used by cells to make energy in respiration. Aerobic respiration is the form of respiration which uses oxygen.It can be summarised by this equation:glucose + oxygen â carbon dioxide + water (+ energy). Energy is shown in brackets because it is not a substance.Notice that: 1  Glucose and oxygen are used up.erobic respiration is the form of respiration which uses oxygen. It can be summarised by this equation: glucose + oxygen â carbon dioxide + water (+ energy). Energy is shown in brackets because it is not a substance. Notice that: 1  Glucose and oxygen are used up.
Typically when we speak about smaller than normal red blood cells, we talk about their volume. Assuming you mean small volume red blood cells (called a low MCV), there are many conditions that can cause this. I recommend that you follow-up with your doctor. The most common is iron deficiency, which is diagnosed not only by looking at blood iron levels but also ferritin, total iron binding capacity and sometimes transferrin saturation.
1 There are three red blood cell indices: mean corpuscular volume (MCV), mean corpuscular hemoglobin (MCH), and mean corpuscular hemoglobin concentration (MCHC). 2  They are measured by a machine, and their values come from other measurements in a CBC. 3  The MCV shows the size of the red blood cells. Too many or too few of the different types of white blood cells can help find an infection, an allergic or toxic reaction to medicines or chemicals, and many conditions, such as leukemia. 2  Red blood cell (RBC) count. 3  Red blood cells carry oxygen from the lungs to the rest of the body.