Chapter 22 Flashcards
Pulmonary ventilation
movement of air into and out of the lungs (breathing)
External ventilation
exchange of O2 and CO2 between lungs and blood
Transport
O2 and CO2 in blood
Internal respiration
exchange of O2 and CO2 between systemic blood vessels and tissues
Nose
produces mucus; filters, warms, and moistens incoming air; resonance chamber for speech.
Receptors for sense of smell
Paranasal sinuses
lighten skull; secrete mucous; also warm, moisten, and filter incoming air
Respiratory mucosa
pseudostratified ciliated columnar epithelium that contains goblet cells and rest on lamina propria that contains many seromucous nasal glands
(makes mucous)
Nasal conchae
increase surface area
during inhalation: filter, heat and moisten air
during exhalation: reclaim heat and moisture
Rhinitis
cold
Pharynx
Passageway for air and food
Facilitates exposure of immune system to inhaled antigens
3 regions: nasopharynx; oropharynx; laryngopharynx
Nasopharynz
NEED
oropharynx
NEED
laryngopharynx
NEED
larynx
NEED
epiglottis
NEED