use the Data Table Below to answer Part A) question. Part A) Use the data from c

Question

use the Data Table Below to answer Part A) question.

Part A) Use the data from column 4 in Table 1 to decide whether there was any significant change in the efficiency of oxygen extraction by the lungs with successive breaths. Use your knowledge of oxygen binding to hemoglobin to explain your findings. Does this support the idea that lack of oxygen is what leads to the discomfort you may have experienced at the end of the experiment?

Part B)

Assume that the volume of air breathed in and out with normal breathing is 500 mL, or ¼ the volume breathed in and out during this experiment (1 gallon ˜ 4 L). Also assume that the efficiency of oxygen extraction is the same for these smaller breaths.

How long would it take without supplemental oxygen tanks to use up all of the oxygen in a Gemini space capsule?

(FYI, Gemini was a 2-man space capsule used between 1964-1966 with 2.26 m3 of habitable space)

Part C)

Barometric or atmospheric pressure refers to the sum total of the pressure of all gases present. In the Physiology Lab,l it is approximately 101.3 kPa (760 mm Hg).

What is the oxygen partial pressure in the bag at the start of the experiment?

Part D)

Assume the barometric pressure at the top of Mt. Everest (8,850 m) is 32.7 kPa (245 mm Hg).

What is the oxygen partial pressure there?

What percent of oxygen would need to be breathed at the top of Mt. Everest, or in a commercial airliner flying at that altitude, to equal the pressure of oxygen breathed at sea level?

What is it at the end of the experiment?

Explanation / Answer

A)With the above data, we can say there is significant change in the efficiency of oxygen extraction by the lungs with successive breaths. As with repeated inhalation and exhalation of oxygen, the pressure and availability of oxygen will decrease, as the amount of O2 bound to hemoglobin is directly proportional to the partial pressure of the oxygen (Po2). So the reduced oxygen will lead to the discomfort as the body is not able to get sufficient oxygen.

B)Volume of air breathed in and out with normal breathing=500ml

1 gallon=4L

The space available in Gemini space capsule=2.26m3

Convert m3 into gallon

Now convert 597 gallons into Liters

=597x4=2388 liters.

How long it will take to use up all of the oxygen in a Gemini space capsule=2388/0.5=4776.

Here we converted the 500 ml into 0.5 L and used in the calculation.

So it will take 4776 normal breathing in and out to empty the 2.26 m3 of habitable space.

C)The atmospheric pressure at sea level= 101.3 kPa

Oxygen pressure in the bag at the start of the experiment=101.3x18.91=1915 kPa

Oxygen pressure in the bag at the end of the experiment=101.3x15.43=1563 kPa

Related Questions

Navigate

• Browse (All)
• Browse U
• Subjects

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