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.
MCV stands for mean corpuscular volume. Itâs the average volume of the bodyâs red blood cells, measured in femtoliters (one-quadrillionth of a liter). Cell-counting machines calculate MCV from a blood sample. A normal value may vary between laboratories, but is usually between 80 and 96 femtoliters (fL). An MCV above 100 fL is called macrocytosis.