K409 - Homework #4 (Exam 2) Study
Guide
If lung (intrapulmonic) pressure is less than atmospheric pressure, which way does air flow?
A. into the lung
B. out of the lung
C. it is not possible for lung pressure to be less than atmospheric pressure - Answer A
The ventilatory breakpoint (or ventilatory threshold) is caused by....
A. a lack of oxygen in exercising muscles
B. a lack of carbohydrate to fuel exercise
C. a left shift of the oxyhemoglobin dissociation curve
D. non-metabolic CO2 production from the buffering of H+ by bicarbonate - Answer D
At the onset of exercise from rest, increases in VE are accomplished mainly by....
A. increasing TV
B. increasing fb
C. increasing TLC
D. decreasing RV - Answer A
Which of the following people would likely have the largest lung volume? Bill -male, age 25,
mass 75kg, height 200cm Steve -male, age 25, mass 90kg, height 165cm
A. Bill
B. Steve Their lung volume would likely be the same - Answer A
**The three key factors influencing TLC are height, age, and sex. Both are men and 25y. Bill is
taller.**
Oxygen can be transported in the blood by binding to Hb and...
A. dissolving in plasma
B. being converted to bicarbonate
Guide
If lung (intrapulmonic) pressure is less than atmospheric pressure, which way does air flow?
A. into the lung
B. out of the lung
C. it is not possible for lung pressure to be less than atmospheric pressure - Answer A
The ventilatory breakpoint (or ventilatory threshold) is caused by....
A. a lack of oxygen in exercising muscles
B. a lack of carbohydrate to fuel exercise
C. a left shift of the oxyhemoglobin dissociation curve
D. non-metabolic CO2 production from the buffering of H+ by bicarbonate - Answer D
At the onset of exercise from rest, increases in VE are accomplished mainly by....
A. increasing TV
B. increasing fb
C. increasing TLC
D. decreasing RV - Answer A
Which of the following people would likely have the largest lung volume? Bill -male, age 25,
mass 75kg, height 200cm Steve -male, age 25, mass 90kg, height 165cm
A. Bill
B. Steve Their lung volume would likely be the same - Answer A
**The three key factors influencing TLC are height, age, and sex. Both are men and 25y. Bill is
taller.**
Oxygen can be transported in the blood by binding to Hb and...
A. dissolving in plasma
B. being converted to bicarbonate
