Question

determine which set of capillaries each of the following processes would occur in.
labels
chloride ion shifts into the rbc.
carbon dioxide binds to plasma proteins.
carbon dioxide diffuses from the blood.
carbonic acid in rbcs converts back to carbon dioxide and water.
carbonic anhydrase is increasing the amount of carbonic

Explanation:

• Chloride ion shifts into the RBC: In systemic capillaries, when carbon dioxide enters red - blood cells (RBCs) and forms carbonic acid which dissociates, chloride ions shift into RBCs to maintain electrical neutrality.
• Carbon dioxide binds to plasma proteins: This occurs in systemic capillaries as carbon dioxide is being transported from tissues (where it is produced) to the lungs.
• Carbon dioxide diffuses from the blood: This happens in alveolar capillaries. Alveolar capillaries are involved in gas exchange (oxygen into the blood and carbon dioxide out of the blood into the alveoli for exhalation).
• Carbonic acid in RBCs converts back to carbon dioxide and water: In alveolar capillaries, as carbon dioxide needs to be released from the blood (to be exhaled), carbonic acid in RBCs (which was formed from carbon dioxide and water in systemic capillaries) is converted back.
• Carbonic anhydrase is increasing the amount of carbonic acid: This occurs in systemic capillaries. Carbonic anhydrase in RBCs catalyzes the reaction of carbon dioxide and water to form carbonic acid, which helps in carbon dioxide transport.

Answer:

• Chloride ion shifts into the RBC: Systemic Capillaries
• Carbon dioxide binds to plasma proteins: Systemic Capillaries
• Carbon dioxide diffuses from the blood: Alveolar Capillaries
• Carbonic acid in RBCs converts back to carbon dioxide and water: Alveolar Capillaries
• Carbonic anhydrase is increasing the amount of carbonic acid: Systemic Capillaries