Question: During external respiration the PCO2 in the alveolar decreases from ___ mmHg to 40 mmHg
Answer: 45
Question: The trachea is part of the ___ respiratory system
Answer: lower
Question: Which are among the four continuous and simultaneous process of respiration?
Answer: – Alveolar gas exchange
– System gas exchange
– Gas transport
– Pulmonary ventilation
Question: Match the letter on the left with the structure on the right
Answer: A: visceral pleura
B: pleural cavity
C: parietal pleura
Question: The ___ is the main conducting airway for inhaled air
Answer: Nose
Question: The left lung has ___ secondary bronchi since it has ___ lobes; the right lung has ___ lobes and ___ secondary bronchi
Answer: 2,2,3,3
Question: Which of the following substances can be carried in the blood bound to the hemoglobin
Answer: – carbon dioxide
– oxygen
– hydrogen ions (protons)
Question: The paranasal sinuses are named for the bones where they are located. Rank the bones in order starting with the most superior
Answer: Frontal
Ethmoid
Maxilla
Question: The letter A indicates the ___ sinus and the letter C indicates the ___ sinus
Answer: Ethmoid; Frontal
Question: The external respiration, oxygen diffuses down a partial pressure gradient. The PO2 in the alveoli is ___ mmHg, while the PO2 in the blood is ___ mmHg
Answer: 104; 40