The correct answer is D. When blood returns to the lungs, it is at about 50% oxygen saturation. The level of oxygen in the blood is related to the activity level. For example, a person with a high activity level will have a higher saturation level of oxygen than a person with low activity. Blood is more likely to be elevated during times of increased activity. The amount of heat the body has increases the hematocrit of the blood.
Two components make up blood: plasma and red blood cells. The hematocrit (or RBCs) accounts for less than half of the blood. The two components of blood carry oxygen in two forms. Oxygen is dissolved in the plasma and in the water of the RBCs. The other part of the body is bound to hemoglobin which reversibly bonds oxygen.
Red blood cells carry oxygen in two forms: dissolved in water and reversibly bound to hemoglobin. As the blood becomes less oxygenated, more oxygen can bind to hemoglobin. This is the process of equilibration. As the blood’s P O2 levels rise, oxygen binding sites are occupied more and more until all RBCs are oxygen-saturated. This is also known as the oxygen saturation curve or the oxygen dissociation curve.
The pressure gradient between the external atmosphere and the internal atmosphere determines the rate of gas flow. The difference in pressure between the external and internal atmospheres determines how much oxygen flows into the alveoli. The blood will return to equilibrium with the same amount oxygen if it is deoxygenated. The final result is a stable equilibrium between the P O 2 and the bound oxygen content.
The oxygen in the blood has two forms. The oxygen is dissolved within the RBCs and bound to hemoglobin. This means that the amount of oxygen in the blood is directly proportional to the difference between the external and internal atmosphere pressure. The difference between the two is called the pressure gradient. However, it is important to remember that the oxygen transport in the blood occurs in the body as a result of carbon monoxide.
Oxygen is carried in two forms inside the RBC. The oxygen is dissolved in water. About 70% of the RBCs contain water. The oxygen is reversibly bound to the hemoglobin. The hematocrit of a person is higher than that of an average adult. If the percentage is lower, the oxygen is transported through the blood by way of the kidney. The kidneys also transport carbon monoxide.
Two forms of oxygen are carried within the RBCs. The oxygen is dissolved in water, which is about 70% of the total volume of the RBC. Reversibly, the oxygen is also bound with hemoglobin. The oxygen will return to equilibrium if the blood is deoxygenated. The hemaglobin’s oxygen content decreases while the hemaglobin is more active.
The oxygen is transported in two forms inside the RBC. The oxygen is dissolved in water. About 70% of the RBCs are made up by water. The oxygen is reversibly bound to the hemoglobin. It is also carried in the blood as a molecule. The water in the RBCs are reversible. The difference between the blood pressure and the external atmosphere is called the difference between them.
Oxygen is transported in two forms in the RBC. The oxygen is dissolved in water. The oxygen is reversibly bound to hemoglobin. This means that the higher the temperature, the more oxygen will flow through the RBC. Two types of molecules make up hemoglobin. The first type is a molecule of iron that is found in the blood.