A&P II- Exam III-Connect (Respiratory System)

Place the following structures in the correct order through which a molecule of air would pass as it moves from the nose to the alveoli.

1. Nasopharynx 2. Oropharynx 3. Laryngopharynx 4. Trachea 5. Carina 6. Main bronchi 7. Lobar bronchi 8. Segmental brochi 9. Bronchiole 10. Terminal bronchiole 11. Respiratory bronchiole

1. Which of the following are bicarbonate ions exchanged for when they diffuse from plasma back into red blood cells? 2. At the respiratory membrane, the partial pressure of carbon dioxide in the plasma is _____ than in the _____ of the lungs.

1. chloride ions 2. higher; alveoli

1. Carbonic anhydrase is found in the _______________ where it directly catalyzes the formation of ____________________ 2. Blood pH decreases in response to ________________________ 3. Renal retention of bicarbonate _______________ blood pH, acting as a compensatory mechanism for the condition of respiratory ____________________________ 4. Hypoventilation results in a(n) _________________ in the arterial partial pressure of carbon dioxide, which may result in respiratory ___________________________

1. red blood cells; carbon dioxide gas into carbonic acid. 2. the dissociation of carbonic acid into bicarbonate and hydrogen ions. 3. increases; acidosis. 4. increase; acidosis.

1. Carbon dioxide enters the blood at the _____________________ capillaries. Here, some of the carbon dioxide binds to the _____________ region of hemoglobin. 2. The empirical formula for bicarbonate is ________________. 3. Carbon dioxide goes through a series of reactions resulting in the formation of bicarbonate. Where does this reaction occur?

1. systemic; globin 2. HCO3- 3. Systemic capillaries

Because gas exchange does not occur within the conducting zone of the respiratory system, it is also referred to as what?

Anatomical Dead Space

Oxygen-rich blood is carried through pulmonary arteries from the lungs to the heart.

False

What determines the direction of gas movement?

The partial pressure differences

Oxygen-poor blood is carried through systemic veins from the body tissues back to the heart.

True

Which of the following structures are part of the conducting zone of the respiratory system? Check all that apply.

Pharynx; Larynx; Trachea; Main Bronchi

Which of the following statements about partial pressures of gases in the tissues is true?

Po2 in blood > Po2 in tissues; Pco2 in blood < Pco2 in tissues

Which of the following statements about partial pressures of gases in the lungs is true?

Po2 in the lungs > Po2 in the blood; Pco2 in the lungs < Pco2 in the blood