Bio 224A Respiratory pt.1 and 2 quiz Flashcards
Normal adult tidal volume is approximately ____________ mL.
500
Which region of the pharynx is located posterior to the oral cavity and superior to the larynx?
oropharynx
What type of epithelium lines the trachea?
pseudostratified columnar ciliated
All of the following are components of the upper respiratory tract EXCEPT the
trachea
All of the following structures are involved in conducting air EXCEPT
Alveoli
According to Boyle’s law, the volume of a gas is directly proportional to its pressure.
T or F
false
Dust cells are
alveolar macrophages
The exchange of oxygen and carbon dioxide is governed by _______________.
the partial pressures of the individual gases
Which of the following events will most likely result in a pneumothorax?
Air enters the intrapleural space
Which of the following structures is lined with simple squamous epithelium?
alveoli
Carbon dioxide is transported from the tissues to the lungs primarily as ____
(Hint: spell the word out, do not write the chemical formula).
Bicarbonate
Primary control of the diaphragm occurs through which nerve(s)?
phrenic nerve
As a compensatory (or reflex) mechanism, a decreased in arterial PCO2 will result in
hypoventilation
Hemoglobin can bind and carry CO2.
T or F
True
The Hering-Breuer reflex __________________.
protects the lungs from damage due to over inflation
The normal blood pH is 7.4. If the blood pH is 7.0, in which direction will the oxygen-hemoglobin dissociation curve shift?
To the right of baseline
The central chemoreceptors which help trigger breathing are located where?
medulla oblongata
Which of the following conditions will increase the affinity of hemoglobin for oxygen?
decreased H+
Where is the primary respiratory control center located?
medulla oblongata
Relating to the oxygen-hemoglobin dissociation curve, place the stimulus into their respective physiological response.
Shift the curve to the right
- Decrease pH
-Increase temperature
-Increase carbon dioxide
-Increase 2,3, bisphosphoglycerate
-Increase hydrogen ion concentration
Relating to the oxygen-hemoglobin dissociation curve, place the stimulus into their respective physiological response.
Shift the curve to the left
-Decrease carbon dioxide
-Decrease 2,3 bisphosphoglycerate
-Decrease temperature
-Decrease hydrogen ion concentration
-Increase pH
