20%
The lowest concentration of oxygen in the body is in the venous blood returning to the heart. This blood has delivered oxygen to tissues and organs and is now returning to the heart to pick up more oxygen in the lungs through respiration.
The right side of the heart is often referred to as "blue" because it receives deoxygenated blood from the body, which has a lower oxygen content and appears darker in color. This blood is pumped to the lungs for oxygenation. In contrast, the left side of the heart is associated with "red" blood, which is oxygenated and pumped to the rest of the body.
To compare the concentration of blue particles on side A with that of side B, you would need to assess the number of blue particles per unit volume or area on each side. If side A has a higher number of blue particles per unit than side B, then it has a greater concentration, and vice versa. If the concentrations are equal, then the distribution of blue particles is uniform between the two sides.
the Right side
heart
The left side of the heart contains oxygen-rich blood. The right side of the heart contains deoxygenated blood.
The right side of the heart pumps oxygen-poor blood into the lungs for oxygenation.
The difference in concentration of oxygen on either side of the cell membrane creates a concentration gradient that drives the diffusion of oxygen from an area of higher concentration to an area of lower concentration. The greater the concentration gradient, the faster the rate of diffusion, as molecules naturally move to achieve equilibrium. This process is crucial for cellular respiration, as cells require a continuous supply of oxygen to generate energy. If the concentration difference is minimal, the rate of oxygen diffusion will be slower.
It receives oxygen
The right side of the heart pumps deoxygenated blood (blood deprived of oxygen) to the lungs where it can then receive oxygen.
The right side of the heart pumps blood to the lungs to pick up oxygen. From the lungs it goes back to the left side of the heart, which pumps it out to the rest of the body. Blood then returns to the right side of the heart and starts the cycle over.
On the left it's blue and on the right it's red, but the heart curves in a way where it's on both sides.