QUESTION 4 s ponts save 3 points Save Answer Fill in the blanks with the correct

Question

QUESTION 4 s ponts save 3 points Save Answer Fill in the blanks with the correct words. During inspiration, intra-alveloar pressure is. pressure. atmospheric A. less than B. equal to A The tidal volume is the amount of fresh air that reaches the alveoli plus the dead space volume C. greater than The intra-alveolar pressure when the diaphragm contracts is the intra-alveolar pressure when the diaphragm relaxes. A The partial pressure of carbon dioxide in the blood leaving the lungs via the pulmonary vein is _ the partial pressure of carbon dioxide in the alveolar air. At normal partial pressures in the capillaries, the percent of carbon º dioxide in the blood that is bound to hemoglobin is. the percent of oxygen in the blood that is bound to hemoglobin.

Explanation / Answer

1. LESS THAN

Intraalveolar pressure is the pressure existing in the
alveoli of the lungs. It is also known as intrapulmonary
pressure.

normally intraalveolar pressure is equal to atmospheric pressure but during inspiration it becomes negative or less than atmospheric pressure so that atmospheric pressure enters the alveoli.

2. EQUAL TO

Tidal volume (TV) is the volume of air breathed in and
out of lungs in a single normal quiet respiration. Tidal
volume signifies the normal depth of breathing. Dead space is defined as the part of the respiratory tract, where gaseous exchange does not take place. Airpresent in the dead space is called dead space air.

3. LESS THAN

Intraalveolar
pressure causes flow of air
in and out of alveoli. During inspiration, the
intraalveolar
pressure becomes negative, so
the atmospheric air enters the alveoli. Duringexpiration, intraalveolar
pressure becomes
positive. So, air is expelled out of alveoli.

4. EQUAL TO

Partial of CO2 for pulmonary vein is 40mmhg which is same as that of alveolar air.   

Related Questions

Navigate

• Browse (All)
• Browse Q
• Subjects

---

---

Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.