Respiratory system: Function
exchange gases between atmosphere and blood (cells)
Events of Respiratory system
ventilation (inhale/exhale), gas exchange-air & lungs, gas transport (through hemoglobin), gas exchange (cell using it) -blood & cells, cellular respiration
mucous membrane of the Respiratory tract
pseudo stratified cilliated columnar epithelium with goblet cells, rich in blood vessels
Nasal cavity structure
nasal concha, nasal septum, mucous membrane, para-nasal sinuses
Nasal concha
3 passages ways, superior,, middle, and ingerior
Nasal septum
bony and cartilage portions
paranasal sinuses
space in skull bones, open into nasal cavity, reduces skull weight, changes voice quality, frontal, maxillary, spheroid ethmoid
nasal cavity function
traps dust particles-hair, mucous, cilia, warms air-rich blood vessel supply, humidifies air.
pharynx regions
nasopharynx, oropharynx, laryngopharynx
voice box: infront (trachea & esphogus behind), cartilage: thyroid, cricoid, aretynoid, epiglottis, vocal ligaments: true and false, mucous membrane: pseudo stratified cilliated columnar epithelium with goblet cells
cartilage rings: help keep it from collapsing ( open ->air flow), pseudo stratified cilliated columnar epithelium with goblet cells
larynx structure
move aretynoid cartilage to close rim of glottis, move aretynoid/thyroid cartilage to stretch vocal cords
bronchial tree
highly branched airway, blind ended passageway, enters lung at hilus
air passageways and blood vessels, soft, spongy, elastic, right lung:3 lobes, left lung: 2 lobes
bronchial tree: bronchi
primary bronchus-> lung, secondary bronchus -> lobe, tertiary bronchus -> segment
Factors affecting 02 binding
more O2 release (shift curve to the right) caused by:high CO2, low pH, higher temp, exist while working out
positive cooperativity, bind O2 tightly @high P.P, not letting it go ( as in lungs/arteries), Binds O2 less tightly @ lower P.P releasing it (as in tissue/vein), @10,000 ft, Hb=90% saturated, CO binds irreversibly
Oxygen binding to hemoglobin
dissolved in blood: 7% of total, bound to hemoglobin: 23 of total: doesn't bound to heme group, formation of bicarbonate: 70% of total
Transport of CO2