Problem:
Question 1: What are the principles of the Endocrine system? Explain thoroughly.
Question 2 a) Erythrocytes contain 250 million molecules of hemoglobin. Assuming that erythrocytes are disks with radius of 3.75 ?m and height of 2.5?m (volume of disk is pi*r2*h) what is the concentration of O2 in an erythrocyte?
b) Assuming that dissolved O2 in the plasma is 200 ?M what is the average O2 concentration of whole blood with and without hemoglobin, assuming a normal hematocrit of about 40%? Show your calculations, but you do not need to write out any explanation.