A & P II Respiratory And Digestive
System| 2026 Update
P02 is about ___ in tissues and ____ in alveolar air. - Ans--40 mmHg, 100
mmHg
Which is a factor that does NOT affect hemoglobin's affinity for oxygen? -
Ans--The rate of respiration
This is the primary gas exchange site. - Ans--Type 1 cells of the alveolus
At rest blood returning to the left side of the heart is ~____% saturated with
02 - Ans--100
The expiratory reserve is the amount of air: - Ans--That you forcefully exhale
These are cells of the alveoli that produce surfactant. - Ans--Type II alveolar
cells
This means the lungs and the chest wall do not expand easily. - Ans--Low
compliance
Which of the following impact the rate of pulmonary and systemic gas
exchange. - Ans--All of these (partial pressure difference of the gases,
diffusion distance, molecular weight and solubility of the gases, surface
area for gas exchange
Which enzyme aids in your ability to digest lipids? - Ans--Lipase
In the medullary rhythmicity area, the expiratory area establishes the basic
rhythm of quiet breathing, while the inspiratory area remains inactive. -
Ans--True
, What keeps us from digesting our own stomach? - Ans--an alkaline mucus
lining secreted by cells in the stomach
23% of O2 and 98.5% of CO2 is transported attached to Hb. - Ans--False
Which of the following processes is the function of the smooth muscle layer
of the digestive system? - Ans--Mixing and propulsion
After mixing with digestive juice in the stomach, food is called - Ans--chyme
Which is the dominant method of carbon dioxide transport? - Ans--As
bicarbonate ions
The conducting airways with the air that does not undergo respiratory
exchange are known as the - Ans--respiratory dead space
When blood pH drops (increasing acidity) then the amount of
oxyhemoglobin ___ and oxygen delivery to the tissue cells _______. - Ans--
Decreases, increases
During normal, quiet breathing exhalation begins when - Ans--Inspiratory
muscles relax
Hemoglobin can unload more oxygen metabolically active tissues than in
tissues at rest because - Ans--Increasing body temperature decreases the
affinity of hemoglobin for oxygen
Which of the following secrete hydrochloric acid? - Ans--Parietal cells
Because we use carbohydrates as energy, we can absorb molecules of
starch without breaking them down into their smaller monosaccharide
building blocks - Ans--False
If you were to take 10 breaths/min and inhaled about 600 mL/breath, your
minute ventilation rate would be - Ans--6,000 ml/min
System| 2026 Update
P02 is about ___ in tissues and ____ in alveolar air. - Ans--40 mmHg, 100
mmHg
Which is a factor that does NOT affect hemoglobin's affinity for oxygen? -
Ans--The rate of respiration
This is the primary gas exchange site. - Ans--Type 1 cells of the alveolus
At rest blood returning to the left side of the heart is ~____% saturated with
02 - Ans--100
The expiratory reserve is the amount of air: - Ans--That you forcefully exhale
These are cells of the alveoli that produce surfactant. - Ans--Type II alveolar
cells
This means the lungs and the chest wall do not expand easily. - Ans--Low
compliance
Which of the following impact the rate of pulmonary and systemic gas
exchange. - Ans--All of these (partial pressure difference of the gases,
diffusion distance, molecular weight and solubility of the gases, surface
area for gas exchange
Which enzyme aids in your ability to digest lipids? - Ans--Lipase
In the medullary rhythmicity area, the expiratory area establishes the basic
rhythm of quiet breathing, while the inspiratory area remains inactive. -
Ans--True
, What keeps us from digesting our own stomach? - Ans--an alkaline mucus
lining secreted by cells in the stomach
23% of O2 and 98.5% of CO2 is transported attached to Hb. - Ans--False
Which of the following processes is the function of the smooth muscle layer
of the digestive system? - Ans--Mixing and propulsion
After mixing with digestive juice in the stomach, food is called - Ans--chyme
Which is the dominant method of carbon dioxide transport? - Ans--As
bicarbonate ions
The conducting airways with the air that does not undergo respiratory
exchange are known as the - Ans--respiratory dead space
When blood pH drops (increasing acidity) then the amount of
oxyhemoglobin ___ and oxygen delivery to the tissue cells _______. - Ans--
Decreases, increases
During normal, quiet breathing exhalation begins when - Ans--Inspiratory
muscles relax
Hemoglobin can unload more oxygen metabolically active tissues than in
tissues at rest because - Ans--Increasing body temperature decreases the
affinity of hemoglobin for oxygen
Which of the following secrete hydrochloric acid? - Ans--Parietal cells
Because we use carbohydrates as energy, we can absorb molecules of
starch without breaking them down into their smaller monosaccharide
building blocks - Ans--False
If you were to take 10 breaths/min and inhaled about 600 mL/breath, your
minute ventilation rate would be - Ans--6,000 ml/min
