General Pulmonary Physiology Concept

Question 1

How many divisions are there in the pulmonary tree?

Answer 1

23

Question 2

What are the sympathetic nervous system receptors of the smooth muscle of the conducting airways?
What are the parasympathetic?

Answer 2

Sympathetic: beta2 -> bronchodilation
Parasympathetic: M3 -> bronchoconstriction

Question 3

Region of the lung completely lined with alveoli but contains little smooth muscle and no cilia

Answer 3

alveolar ducts

Question 4

volume that can be inspired above tidal volume

Answer 4

inspiratory reserve volume (IRV)

~3 L

Question 5

volume that can be exhaled below tidal volume

Answer 5

expiratory reserve volume (ERV)

~1.2 L

Question 6

volume of gas remaining in the lung following maximal forced expiration

Answer 6

residual volume (RV)
~1.2 L

Question 7

the volume remaining in the lungs following normal expiration (also called the equilibrium volume)

Answer 7

functional residual capacity (FRC)

Question 8

vital capacity (VC) + residual volume (RV)

Answer 8

total lung capacity (TLC)

Question 9

includes anatomic dead space of the conducting airways & the functional alveolar dead space

Answer 9

physiologic dead space

*note in NORMAL people the anatomic dead space is ~ to physiologic dead space