Pulmonary Circulation & Gas Transport in the Blood

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Can you name the Pulmonary Circulation?

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QuestionAnswer
_____ partial pressure of CO2 causes vasoconstriction
T/F: The concentration of dissolved oxygen in the blood determines the percent saturation of hemoglobin
When oxygen binds hemoglobin to form oxyhemoglobin, is hemoglobin is a relaxed or tense state?
Hemoglobin is 50% saturated at ___ mmHg O2.
At larger lung volumes, what happens to the resistance of the extra-alveolar vessels? (increase or decrease)
According to Henry;s Law, concentration of dissolved gas is dependent on what two variables.
The pulmonary circulation is a ___ compliance system.
Lowest total resistance occurs at _____.
At larger lung volumes, what happens to the resistance of the alveolar vessels? (increase or decrease)
Hemoglobin is 90% saturated at ___ mmHg O2.
mean arterial pressure in the pulmonary circulation
T/F: The binding of oxygen to hemoglobin is linear
As pulmonary arterial pressure increases, what happens to the resistance ? (increases or decreases)
An increased pCO2 or a decrease in blood pH will cause a rightward shift of the blood oxygen binding curve to hemoglobin. This is known as the ____ effect.
defined as the amount of O2 bound to hemoglobin / the carrying capacity of hemoglobin
T/F: Under normal circumstances, there is no Zone 1 in the lungs
True/ False: Vaso active substances such as prostaglandins, leukotrienes, and angiotensin II are metabolized and/ or removed in the lung
Venous partial pressure of oxygen (mm Hg)
When oxygen is released from hemoglobin to form deoxyhemoglobin, is hemoglobin is a relaxed or tense state?
Low partial pressure of O2 in the alveolar air causes _____ in the small pulmonary arteries
mean arterial pressure in the systemic circulation
CO2 can be dissolved in the blood, carried in the form of bicarbonate, or carried as _____ compounds.
this substance or gas vasodilates the pulmonary vasculature
molecule made as a result of metabolism of RBC.... its production is increased under hypoxic conditions
normal amount of hemoglobin in the blood (in grams/100mL)
Where does recruitment usually occur in the lung.
The content carried by hemoglobin can be calculated by multiplying ____ and _____.
These vessels are affected by alveolar pressure and includes capillaries surrounding alveoli
In this zone the alveolar pressure is less than the pulmonary arterial pressure but it exceeds the pulmonary venous pressure
An increase in 2, 3 DPG production will cause a ____-ward shift in the oxygen binding curve for hemoglobin.
QuestionAnswer
At residual volume, the resistance is the least in the extra-alveolar or alveolar vessels?
Alveolar vessel resistance is the lowest in which zone?
calculated by the [(arterial gas content -venous gas content) x blood flow]
what is the carrying capacity of hemoglobin in the blood per 100mL (ml O2 per 100mL of blood.)
T/F: AN increase in temperature, increases oxygen delivery to tissues by changing the conformation of hemoglobin.
T/F: Low oxygen in alveolar air can act on pulmonary vessels to direct blood away from hypoxic regions and increase pulmonary arterial pressure.
When pulmonary arterial and/or venous pressure increases, more fluid enters the interstitial space. If the lymphatic system cannot absorb the fluid, the result is _____.
Are the extra-alveolar and alveolar vessels in parallel or series?
In this zone the pulmonary arterial and venous pressures are greater than the alveolar pressures
The resistance in the extra-alveolar vessels increases on _____. (inspiration or expiration)
Hemoglobin can hold up to _____ mlO2/g Hemoglobin
T/F: There is more blood flow at the apex of the lung versus the base.
As pulmonary arterial pressure increases blood flows through capillaries that previously had little or no blood flow. This is known as _____.
When capillaries are already open further increases in blood pressure dilate the vessels, which is known as ____.
As pulmonary arterial pressure increases, what happens to the blood flow? (increases or decreases)
In _____, the O2 content is decreased with a decreased amount of O2 binding to hemoglobin.
primary form of CO2 in the blood
T:F: There is a left to right shunt in the pulmonary circulation that arises from blood that does not flow through the pulmonary capillaries to pick up oxygen before it enters the
True/ False: The total content of CO2 is higher in the blood than O2.
At total lung capacity, the resistance is the least in the extra-alveolar or alveolar vessels?
In this zone the alveolar pressure exceeds the pulmonary arterial pressure
In _____, the O2 content is decreased but there is no change in the relationship of oxygen binding to hemoglobin.
these vessels are affected by the intrapleural pressure.
The resistance in the alveolar vessels increases on _____. (inspiration or expiration)
A ____-ward shift in the oxygen binding curve to hemoglobin denotes an decrease in oxygen delivery to tissues.
Hemoglobin is 75% saturated at ___ mmHg O2.
A ____-ward shift in the oxygen binding curve to hemoglobin denotes an increase in oxygen delivery to tissues.
T/F: The oxygen dissolved in the blood is enough to meet the body's metabolic needs.
T/F: Total gas content is calculated by adding the amount carried on hemoglobin and the amount of gas dissolved
The ____ circulation supplies the conducting airways.

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