Respiratory physiology 1 Flashcards
What are the main functions of the respiratory function?
Gas exchange
Acid base balance - Regulation of body ph
Protection from infection
Communication via speech
What is the role of pulmonary circulation?
Delivers CO2 to the lungs and collects O2
At rest, what is a normal respiratory rate
12-18 breaths/min
What connects the nose/mouth to the larynx?
Pharynx
What anatomical feature prevents food entering the trachea?
Epiglottis
Where are the vocal cords located?
Within the larynx
At what level is the respiratory tract separated into upper and lower regions?
Larynx
How many lobes does the right and left lung have?
Right has 3 lobes
Left has 2 lobes
How many fissures does the right and left lung have?
Right has 2 (horizontal and oblique fissure)
Left has 1 (oblique fissure)
How many secondary bronchi are there in each lung?
3 in the right lung
2 in the left lung
How is patency maintained in the airways?
C-shaped rings of cartilage
Why is an aspirated foreign body more likely to lodge in the right lung than the left?
Due to the width and angle of the right bronchi
How many divisions occur from the trachea to alveoli?
24
What cells make up the bulk of the alveoli wall?
Type 1 Alveolar cells
What is the conduction zone of the lungs?
Features that do not participate in gas exchange (e.g. trachea, bronchi, bronchioles)
