Hypoxia and Medicine

i have a question about the respiratory system could you please help me?

question 1: how does internal respiration differ from external respiration? question 2 outline the path of oxygen from the atmosphere to the bloodstream. question3 differentiate between oxygen transport and carbon dioxide transport in the blood stream. question 4 predict the effect that increasing altitude would have on a blood oxygen saturation. question 5 why does a single celled organism not need a respiratory system?

Public Comments

1. 1 internal respiration: when Oxygen crosses the capillary membrane into the cell and when CO2 comes out External respiration in the lungs when Oxygen crosses the pulmonary capillary into the blood as PO2 and onto the hemoglobin molecule to saturate it and CO2 crosses out of the blood where it is dissoved as PCO2 to diffuse through the capillary and alveolar wall into the exhaled air. quickly: lung to alveoli to capillary bed to dissolve in blood to be carried by pulmonary artery to left atrium to left ventricle to aorta to systemic circulation to capillary network where it is released by a pressure gradient to the cells. Oxygen is dissolved as PO2 first and secondly is also carried by the hemoglobin molecule. hemoglobin molecule looks just like chlorophyll molecule except the central element Fe is different. CO2 which dissolves quicker is carried in the blood as PCO2 alone. Atmospheric pressure would decrease so there would be less PO2 carried in dissolved form in the blood..Better not be anemic!!! The Saturation of blood is a formula which you will need to look up or ask your teacher : of P02 plus whatever Hemoglobin you have x a factor. Because that little ol' cell does it all by itself!!! nutrients and oxygen in waste and co2 out through its single little cell membrane by pressure gradient diffusion for the gases. and selective enzyme work for the waste and food.