Question

Internal respiration refers to the exchange of gases between the blood in ____________ capillaries and the tissue fluid. Internal respiration services tissue cells, and without internal respiration, cells could not continue to produce the ____________ that they need as an energy source. Blood in the systemic capillaries is a ____________ color because of the presence of oxyhemoglobin. Oxyhemoglobin gives up ____________ , which diffuses out of the blood into the tissues. Oxygen diffuses out of the blood into the tissues because the ____________ of tissue fluid is lower than that of blood. This is because cells continuously use up ____________ in cellular respiration.

ATP Pc?? blue bright red carbon dioxide glucose organ oxygen pulmonary systemic P??

The respiratory system functions in both external and internal respiration. ____________ respiration refers to the exchange of gases between air in the alveoli and blood in the ____________ capillaries. Gases exert pressure, and the amount of pressure each gas exerts is called its ____________ pressure. Compared to atmospheric air, blood in the capillaries has a ____________ partial pressure, therefore, CO? diffuses out of the blood into the lungs. Most of the CO2 in the blood exists as bicarbonate ions. As free CO2 is exhaled by the lungs, more hydrogen ions combine with bicarbonate to form ____________ . The enzyme ____________ , present in red blood cells, speeds the breakdown of this substance into more CO2 and H2O.

External Internal atmospheric carbon monoxide carbonic acid carbonic anhydrase erythrocytic amylase higher lower partial pulmonary thoracic

Answer 1

Internal respiration refers to the exchange of gases between the blood in systemic capillaries and the tissue fluid.

Blood in the systemic capillaries is a bright red color because of the presence of oxyhemoglobin.

Oxyhemoglobin gives up oxygen, which diffuses out of the blood into the tissues.

Oxygen diffuses out of the blood into the tissues because the PO2 of tissue fluid is lower than that of blood. This is because cells continuously use up oxygen in cellular respiration.

ATP Pc?? blue bright red carbon dioxide glucose organ oxygen pulmonary systemic P??

The respiratory system functions in both external and internal respiration. External respiration refers to the exchange of gases between air in the alveoli and blood in the pulmonary capillaries.

Gases exert pressure, and the amount of pressure each gas exerts is called its partial pressure.

As free CO2 is exhaled by the lungs, more hydrogen ions combine with bicarbonate to form carbonic acid.

The enzyme carbonic anhydrase , present in red blood cells, speeds the breakdown of this substance into more CO2 and H2O. External Internal atmospheric carbon monoxide carbonic acid carbonic anhydrase erythrocytic amylase higher lower partial pulmonary thoracic