Pulmonary Circulation & Gas Transport in the Blood

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Can you name the Pulmonary Circulation?

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

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