Q: Which equation best represents the relationship between the partial pressure of oxygen ($$P_{O_2$}) $$and its concentration in the alveoli?

$$C_{O_2$} = P_{O_2$} \times S$$

Question 1

Which of the following best describes the primary function of the upper respiratory tract?

Accepted Answer

Filters, warms, and humidifies incoming air

Question 2

A patient presents with chronic sinus infections. Which anatomical structure is most likely involved in the initial filtration and humidification of inspired air?

Accepted Answer

Nasal cavity

Question 3

Which of the following is NOT a function of the respiratory system?

Accepted Answer

Regulating blood glucose levels

Question 4

The conducting portion of the respiratory tract includes all of the following EXCEPT:

Accepted Answer

Alveoli

Question 5

Which structure prevents food from entering the glottis during swallowing?

Accepted Answer

Epiglottis

Question 6

A person inhales cold, dry air through the mouth rather than the nose. Which of the following is a likely consequence?

Accepted Answer

Air reaches the lungs with less moisture and lower temperature

Question 7

Which of the following best describes the role of cilia in the respiratory defense system?

Accepted Answer

Move mucus and trapped particles toward the pharynx

Question 8

During phonation, which anatomical structure is primarily responsible for sound production?

Accepted Answer

Vocal cords (vocal folds)

Question 9

Which equation best represents the relationship between the partial pressure of oxygen ($$P_{O_2$}) $$and its concentration in the alveoli?

Accepted Answer

$$C_{O_2$} = P_{O_2$} 	imes S$$

Question 10

A patient with cystic fibrosis has thickened mucus in the respiratory tract. Which defense mechanism is most compromised?

Accepted Answer

Ciliary movement

Question 11

Which of the following structures is NOT part of the larynx?

Accepted Answer

Tracheal cartilage

Question 12

Which anatomical feature allows the nasal cavity to efficiently warm and humidify incoming air?

Accepted Answer

Extensive network of capillaries in the lamina propria

Question 13

Which of the following is a function of the vestibular folds in the larynx?

Accepted Answer

Prevent foreign objects from entering the glottis

Question 14

Which of the following best explains why the respiratory epithelium changes along the respiratory tract?

Accepted Answer

To optimize gas exchange and defense mechanisms at different locations

Question 15

A person inhales a small particle that reaches the alveoli. Which defense cell is most likely to remove it?

Accepted Answer

Alveolar macrophage

Question 16

Which of the following is the correct pathway of air through the upper respiratory tract?

Accepted Answer

Nasal cavity → Pharynx → Larynx → Trachea

Question 17

Which of the following is a consequence of damage to the ciliated epithelium in the respiratory tract?

Accepted Answer

Impaired removal of debris and pathogens

Question 18

Which cartilage forms a complete ring around the larynx and provides support?

Accepted Answer

Cricoid cartilage

Question 19

Which of the following best describes the function of the glottis?

Accepted Answer

Serves as the opening between the vocal folds for air passage

Question 20

A patient with a tracheostomy bypasses the upper respiratory tract. Which function is most compromised?

Accepted Answer

Filtration, warming, and humidification of inspired air

Anatomy and Physiology of the Respiratory System: Study Notes

Guida di studio - Domande di pratica

Study guide - Flashcard