Podcast
Questions and Answers
What is the primary function of the upper airway?
What is the primary function of the upper airway?
- Gas exchange through the alveolar-capillary membrane
- Speech and smell
- Filtering air from foreign materials
- Conduction of air, humidification, and warming of inspired air (correct)
At what stage does the respiratory system develop as a fluid-filled structure playing no role in gas exchange?
At what stage does the respiratory system develop as a fluid-filled structure playing no role in gas exchange?
- 24 to 26 weeks of gestation
- Fetal stage (correct)
- At birth
- 2 to 3 years after birth
What is the approximate number of alveoli in a full-term newborn?
What is the approximate number of alveoli in a full-term newborn?
- ~ 100 million
- ~ 470 million
- ~ 50 million (correct)
- ~ 200 million
What separates the nasal cavity into two chambers?
What separates the nasal cavity into two chambers?
At what age does a child have approximately 470 million mature alveoli?
At what age does a child have approximately 470 million mature alveoli?
At what stage of gestation is a fetus generally capable of sufficient gas exchange, if born?
At what stage of gestation is a fetus generally capable of sufficient gas exchange, if born?
What is the approximate number of alveoli in a child at 8-10 years old?
What is the approximate number of alveoli in a child at 8-10 years old?
Which structure is the primary site for the sense of smell in the upper airway?
Which structure is the primary site for the sense of smell in the upper airway?
What separates the nasal cavity into two chambers?
What separates the nasal cavity into two chambers?
What is the primary function of the upper airway?
What is the primary function of the upper airway?
Which muscle group is primarily responsible for flexing the neck and elevating the first and second ribs?
Which muscle group is primarily responsible for flexing the neck and elevating the first and second ribs?
What are the primary functions of the trapezius muscles?
What are the primary functions of the trapezius muscles?
Which muscle group is NOT part of the accessory muscles of expiration?
Which muscle group is NOT part of the accessory muscles of expiration?
What is the primary function of the pectoralis major muscles?
What is the primary function of the pectoralis major muscles?
Which muscle group is responsible for pulling the ribs upward and outward to increase AP and lateral diameters?
Which muscle group is responsible for pulling the ribs upward and outward to increase AP and lateral diameters?
