Respiratory Exam Questions

-conductiong airways -negative pressure pump -gas exchanger

Air moves from atmospher through this to get to alveoli

In spontaneous breathing, a negative pressure is created in the pleural cavity by the muscles of respiration, and the resulting gradient between the atmospheric pressure and the pressure inside the thorax generates a flow of air. -change volume of chest = change pressure ( creates vacum)

-nose -nasal cavity -paranasal sinus -pharynax

- larnyx -trachea -bronchi -bronchioles -alveoli

Everything air goes through in order to reach the gas exchanger (alveoli) -nose-nasal cavity-paranasal sinus-pharynax-larnyx-trachea-bronchi-bronchiloles

Alveoli most delecate bronchiloles-alveoli

1. conduction (conduct air in and out of aveoli) 2. equalization of air to body temperature 3. saturation with water vapor 4. filtration of particulates 5. olfaction 6. gustation 7. voice 8. phonation

Site of O₂ and CO₂ exchange / respiration ,

P x V = constant (pressure in chest x volume in chest will remain constant even if P or V goes up, they will balance ea. other out)

Negative pressure pump- change in chest cavity volume changes pressure in chest cavity by creating a vacum

Thoracic volume increased (expand chest) intrathoracic pressure goes down = intrapulmonary pressure goes down= air moves into lung

Thoracic volume decreased (compress chest) intrathoracic pressure goes up = intrapulmonary pressure goes up = air pushed out of lung

Diaphragm, rib elevators (external intercostals and others)

(at rest = elastic recoil) active state = rib depressors (internal intercostals and rectus abdominis) and diaphragm elevators (abdominal muscles)