Nursing practice questions with comprehensive rationales
NurseDive Free Nursing Practice Question
What type of tissue forms the walls of the alveoli?
A. Ciliated columnar epithelium
Ciliated columnar epithelium -Found in bronchi and larger airways.
B. Simple squamous epithelium
Simple squamous epithelium -Type I alveolar cells form thin walls for efficient gas diffusion.
C. Stratified squamous epithelium
Stratified squamous epithelium -Stratified squamous is protective, found in mouth, esophagus.
D. Areolar connective tissue
Areolar connective tissue -Alveoli are not composed of connective tissue; they are lined by squamous epithelium.
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Full Explanation
A. Ciliated columnar epithelium -Found in bronchi and larger airways.
B. Simple squamous epithelium -Type I alveolar cells form thin walls for efficient gas diffusion.
C. Stratified squamous epithelium -Stratified squamous is protective, found in mouth, esophagus.
D. Areolar connective tissue -Alveoli are not composed of connective tissue; they are lined by squamous epithelium.
Similar Questions
According to Boyle's law, as the volume of a container decreases.
A. the temperature increases
The temperature increases -Boyle’s law does not involve temperature (that’s Charles’ law).
B. the pressure decreases
The pressure decreases -Pressure increases when volume decreases.
C. the pressure increases
The pressure increases -Inverse relationship: decrease in volume leads to increase in pressure.
D. the temperature decreases
The temperature decreases -Not a factor in Boyle’s law.
Full Explanation
A. The temperature increases -Boyle’s law does not involve temperature (that’s Charles’ law).
B. The pressure decreases -Pressure increases when volume decreases.
C. The pressure increases -Inverse relationship: decrease in volume leads to increase in pressure.
D. The temperature decreases -Not a factor in Boyle’s law.
Where is the ventral respiratory group located?
A. In the lungs
In the lungs -Control centers are in the brainstem, not lungs.
B. In the pons
In the pons -The pons houses the pneumotaxic and apneustic centers.
C. In the midbrain
In the midbrain -The midbrain controls reflexes, not primary breathing rhythm.
D. In the medulla oblongata
In the medulla oblongata -The VRG in the medulla generates the basic breathing rhythm.
Full Explanation
A. In the lungs -Control centers are in the brainstem, not lungs.
B. In the pons -The pons houses the pneumotaxic and apneustic centers.
C. In the midbrain -The midbrain controls reflexes, not primary breathing rhythm.
D. In the medulla oblongata -The VRG in the medulla generates the basic breathing rhythm.
"I'm going to hold my breath until I die and it will be all your fault!" shrieked 6-year-old Riley at her father. Why would she be unable to carry out her threat?
A. Decreased CO2 and hydrogen ion concentrations and increased oxygen concentration stimulate her chemoreceptors, triggering inspiration.
Decreased CO₂ and hydrogen ion concentrations and increased oxygen concentration stimulate her chemoreceptors, triggering inspiration. - Chemoreceptors respond to increased CO₂/decreased O₂.
B. The inflation reflex would not her allow to keep her lungs full of air for a prolonged period. The reflex would trigger inspiration.
The inflation reflex would not allow her to keep her lungs full of air for a prolonged period. The reflex would trigger inspiration. -The Hering–Breuer reflex prevents overinflation, not relevant here.
C. Increased CO2 and hydrogen ion concentrations and decreased oxygen concentration stimulate her chemoreceptors, triggering inspiration.
Increased CO₂ and hydrogen ion concentrations and decreased oxygen concentration stimulate her chemoreceptors, triggering inspiration. -Rising CO₂ strongly stimulates medullary chemoreceptors → involuntary breathing resumes.
D. The diaphragm will begin to fatigue and will not be able to hold its contracted position for more than a short period of time.
The diaphragm will begin to fatigue and will not be able to hold its contracted position for more than a short period of time. -Breathing resumes due to chemoreceptor drive before muscle fatigue sets in.
Full Explanation
A. Decreased CO₂ and hydrogen ion concentrations and increased oxygen concentration stimulate her chemoreceptors, triggering inspiration. - Chemoreceptors respond to increased CO₂/decreased O₂.
B. The inflation reflex would not allow her to keep her lungs full of air for a prolonged period. The reflex would trigger inspiration. -The Hering–Breuer reflex prevents overinflation, not relevant here.
C. Increased CO₂ and hydrogen ion concentrations and decreased oxygen concentration stimulate her chemoreceptors, triggering inspiration. -Rising CO₂ strongly stimulates medullary chemoreceptors → involuntary breathing resumes.
D. The diaphragm will begin to fatigue and will not be able to hold its contracted position for more than a short period of time. -Breathing resumes due to chemoreceptor drive before muscle fatigue sets in.