Question

1. what is the role of hemoglobin in the red blood cell?
2. what white blood cells are most important in body immunity?
3. if you had a severe infection, would you expect your wbc count to be closest to 5,000, 10,000 or 15,000/mm³?
4. little lisa is pale and listless. what disorder of erythrocytes might she be suffering from?

Explanation:

1. Hemoglobin binds and transports oxygen from the lungs to the body's tissues and carbon - dioxide from the tissues back to the lungs.
2. Lymphocytes, especially T - cells and B - cells, play crucial roles in adaptive immunity. T - cells can directly attack infected cells and regulate immune responses, while B - cells produce antibodies.
3. In a severe infection, the body's immune response causes an increase in white blood cell (WBC) count. A normal WBC count is around 4,000 - 11,000/mm³. During a severe infection, the count is likely to be elevated above normal, so it would be closest to 15,000/mm³.
4. Pale and listless symptoms can be associated with anemia, which is a disorder of erythrocytes (red blood cells) where there is a reduced number of red blood cells or a decreased ability of the red blood cells to carry oxygen.

Answer:

1. Hemoglobin transports oxygen and carbon - dioxide.
2. Lymphocytes.
3. 15,000/mm³.
4. Anemia.