unit 2B (9+10) Flashcards
What are the major functions of the respiratory system
Supplies oxygen , and gets rid of Co2
and regulates blood pH . ( increased C02 , Decreased pH)
What does the structural division consist of
Larynx and above
What does lower respiratory consist of:
TBI
Trachea, bronchi, & lungs
the respiratory zone consist of:
resp. bronchiole , alveolar duct, alevoli
the conducting system in the functional division consist of :
hint NPLTBB
nose , Pharynx , larynx , trachea , bronchus , bronchiole
what are the internal structures of the nose?
hint: RFSWSS
Roof , floor, septum , wall , space, sinus
what are the 3 functions of the nose ?
moistening and filtering air through the nose, housing the olfactory receptors , and serving as a resonating chamber for speech
Nasopharyx contains….
opening of auditory Eustachian tube and adenoid
Oropharynx contains ….
palatine and lingual tonsils protect entry way into body
Laryngopharynx contains …
epiglottis to cricoid cartilage and Common passageway for food & air
structures of the nose: external/internal nares, nasal cavity,
nasal septum, conchae, olfactory epithelium
the larynx contains
thyroid cartilage, cricoid cartilage, epiglottis, glottis, vocal folds (true vocal
cords), arytenoid cartilages
what part is this ?
A
external nose
Which direction does carbon dioxide move during internal respiration?
From the tissue cells into the blood
Pulmonary ventilation refers to
Movement of air in and out of the lungs
What occurs if intrapulmonary pressure 763 Hg
Exhalation 🫁
Exploratory movements are produced by the contraction of
Internal intercostal muscle
Boyle’s law states :the pressure of gas is
Inversely portional to volume of it’s container
When the diaphragm and intercostal muscles contract what following actions must occur
Air move into the lungs
What is one atmosphere of pressure
760 Hg
Structure of Pharynx
is divided into 3 regions
NOL
nasopharynx , Oropharynx and Laryngopharynx
Henerys law states that
the volume of gas that will dissolve in a solvent is proportional to the solubility of the gas and the gas pressure
Daltons law state that
the volume of gas such as air, the total pressure is the sum of the indivual partial pressures of the gases in the mixture.
the parital pressure of oxygen in atmosphere air at sea level is
greater than the partial pressure of oxygen in atmosphere air at the top of Mount Everest
the partial pressure of oxygen in the intersitial space of peripheral tissue is appox
40 mmHg
A scuba diver has been deep underwater and suddenly rises to the surface too quickly. Why does the diver get decompression sickness?
Pressure decrease too fast, and nitrogen gas in the blood forms bubbles
the partial pressure of carbon dioxide is greatest in
venous blood
most of oxygen transported by the blood is
bound to hemoglobin
Most of carbonic dioxide in the blood is transported as
Bicarbonate ions
About 70’s of carbon dioxide is transported in deoxygenated blood…
as bicarbonate ions in the blood plasma
the transport of CO2 depends on carbonic anhydrase . in the lungs , this enzyme__
turns carbonic acid H2CO3 back into CO2 to be exhaled
Label ___ contains air that does not participate in the gas exchanges.
D
Tidal volume is labeled ___
B
Expiratory reserve volume is labeled__
C
Functional residual capacity is labeled ___
C+D
which of the following can be calculated if the tidal volume and respiratory rate are known
minute volume
if a pt inhales as deeply and then exhales as much as possible the volume of air expelled would be the pts ___
vital capacity
