normal pressure withing pleural space is always )(negative what keeps lungs from collapsing? pressure differences name 3 nonrespiratory air movements cough, sneeze, laugh, cry, yawn, hiccup Normal breahting that moves 500 mL with each breath is (tidal volume amount of air that can be taken in forcibly after inspiration (inspiratory reserve volume 21-3200 mL) amount of air that can be forcibly exhaled expiratory reserve volume 1200 mL Another term for What are they? nostrils Cavities within (external nares) bones surrounding nasal cavity Three regions What is the name the wider of the naso oro, laryngo of the structure two bronchi that routes food (right) to the esophagus and air to the trachea? (epiglottis) Divides the nasal Name two cavity sinuses (nasal septum) (ethmoid, frontal, sphenoid, maxillary) which two allows food travel? oro and laryngo What is the adams apple? projection of thyrod cartilage the longer of the What is the two bronchi upper tip called? (left) apex Where are olfactory receptors located? (superior part of nasal mucosa) three function of sinus lighten skull act as resonance chambers produce mucus Which division of the pharynx do auditory tubes enter? naso 2 functions of larynx speech routes air and food The curvier of the two bronchi left What are the projections coming from the lateral walls? (conchae) What prevents alvioli from collapsing? Surfactant Which tonsils are found in nasopharynx? pharyngeal What is the space between vocal cord scalled? glottis Where do How many lobes bronchi enter the in the right lung? lungs? 3 hilus What purpose do they serve? increase surface area, increase air turbulence What "eats" bacteria and carbon debris in the alvioli? macrophage oro? palatine What happens to the air to produce speech vibrates What division is after primary bronchi? secondary What pleura covers the lung surface? visceral What separates the nasal cavity from the oral cavity? (palate) What connects base of tongue? adjacent alvioli? lingual alveolar pores What is residual air volume? air remaining in lung after expiration 1200 mL What are the smallest branches of the bronchi called? bronchioles What pleura lines the thoracci cavity? parietal Which one is supported by bone? hard palate. 4 phases of respiration pulmonary ventilation, external respiration, gas transportn, internal respiration What is dead space volume air in conducting zone that never reaches alvioli (150 mL) Where do terminal bronchiole end? alveoli what is the purpose of pleura allows gliding What is the formula for vital capacity? IRV+TV+ERV Which part of thoracic cavity is not occupied by lungs? central most Where does the base rest? diaphragm What are the 2 normal respiratory sounds? bronchial sounds and vesicular breathing sounds where does CO2 move in external respiration blood to alvioli how does most CO2 travel in the blood stream? bicarbonate ion in plasma What happens to the volume of the thoracic cavity when the diaphragm and intercostal muscles contract? increases What two parts of the brain regulate respiration? medulla oblongata and pons What is the main regulatory chemical that affects respiration? Co2 levels Where is oxygen transported in external respiration? from alvioli to the blood What carries oxygen in the blood? hemoglobin What happens in internal resiration oxygen goes into tissues, CO2 enters blood stream What happens during expiration? air leaves the lung What is normal respiratory rate called? eupnea What happens to the pH of blood if there is an increase in oxygen? becomes basic or raises pH