Science Quiz / Pulmonary Circulation & Gas Transport in the Blood

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Can you name the Pulmonary Circulation?

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mean arterial pressure in the pulmonary circulation
An increase in 2, 3 DPG production will cause a ____-ward shift in the oxygen binding curve for hemoglobin.
T/F: Under normal circumstances, there is no Zone 1 in the lungs
When oxygen binds hemoglobin to form oxyhemoglobin, is hemoglobin is a relaxed or tense state?
T/F: There is more blood flow at the apex of the lung versus the base.
According to Henry;s Law, concentration of dissolved gas is dependent on what two variables.
T/F: Low oxygen in alveolar air can act on pulmonary vessels to direct blood away from hypoxic regions and increase pulmonary arterial pressure.
True/ False: Vaso active substances such as prostaglandins, leukotrienes, and angiotensin II are metabolized and/ or removed in the lung
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
At residual volume, the resistance is the least in the extra-alveolar or alveolar vessels?
The resistance in the extra-alveolar vessels increases on _____. (inspiration or expiration)
In this zone the alveolar pressure is less than the pulmonary arterial pressure but it exceeds the pulmonary venous pressure
The resistance in the alveolar vessels increases on _____. (inspiration or expiration)
Are the extra-alveolar and alveolar vessels in parallel or series?
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 _____.
A ____-ward shift in the oxygen binding curve to hemoglobin denotes an increase in oxygen delivery to tissues.
At larger lung volumes, what happens to the resistance of the extra-alveolar vessels? (increase or decrease)
Low partial pressure of O2 in the alveolar air causes _____ in the small pulmonary arteries
The pulmonary circulation is a ___ compliance system.
Hemoglobin is 75% saturated at ___ mmHg O2.
this substance or gas vasodilates the pulmonary vasculature
These vessels are affected by alveolar pressure and includes capillaries surrounding alveoli
mean arterial pressure in the systemic circulation
what is the carrying capacity of hemoglobin in the blood per 100mL (ml O2 per 100mL of blood.)
In this zone the pulmonary arterial and venous pressures are greater than the alveolar pressures
Lowest total resistance occurs at _____.
At larger lung volumes, what happens to the resistance of the alveolar vessels? (increase or decrease)
Venous partial pressure of oxygen (mm Hg)
In this zone the alveolar pressure exceeds the pulmonary arterial pressure
T/F: The binding of oxygen to hemoglobin is linear
QuestionAnswer
The content carried by hemoglobin can be calculated by multiplying ____ and _____.
calculated by the [(arterial gas content -venous gas content) x blood flow]
_____ partial pressure of CO2 causes vasoconstriction
Where does recruitment usually occur in the lung.
defined as the amount of O2 bound to hemoglobin / the carrying capacity of hemoglobin
these vessels are affected by the intrapleural pressure.
As pulmonary arterial pressure increases blood flows through capillaries that previously had little or no blood flow. This is known as _____.
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.
normal amount of hemoglobin in the blood (in grams/100mL)
At total lung capacity, the resistance is the least in the extra-alveolar or alveolar vessels?
T/F: AN increase in temperature, increases oxygen delivery to tissues by changing the conformation of hemoglobin.
As pulmonary arterial pressure increases, what happens to the resistance ? (increases or decreases)
molecule made as a result of metabolism of RBC.... its production is increased under hypoxic conditions
Hemoglobin is 90% saturated at ___ mmHg O2.
The ____ circulation supplies the conducting airways.
True/ False: The total content of CO2 is higher in the blood than O2.
In _____, the O2 content is decreased but there is no change in the relationship of oxygen binding to hemoglobin.
In _____, the O2 content is decreased with a decreased amount of O2 binding to hemoglobin.
Alveolar vessel resistance is the lowest in which zone?
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.
A ____-ward shift in the oxygen binding curve to hemoglobin denotes an decrease in oxygen delivery to tissues.
As pulmonary arterial pressure increases, what happens to the blood flow? (increases or decreases)
Hemoglobin can hold up to _____ mlO2/g Hemoglobin
primary form of CO2 in the blood
Hemoglobin is 50% saturated at ___ mmHg O2.
T/F: The concentration of dissolved oxygen in the blood determines the percent saturation of hemoglobin
When capillaries are already open further increases in blood pressure dilate the vessels, which is known as ____.
When oxygen is released from hemoglobin to form deoxyhemoglobin, is hemoglobin is a relaxed or tense state?
CO2 can be dissolved in the blood, carried in the form of bicarbonate, or carried as _____ compounds.

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