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BarryPathoResp

Patho Respiratory

QuestionAnswer
When pH decreases (increase acidity), shifts O2-Hb diss curve to Right
pH increase shifts O2-Hb diss curve to Left
Increase CO2, increase temp, exercise shifts O2-Hb diss curve to Right
Decrease CO2, increase pH, shifts O2-Hb diss curve to Left
What percent of O2 binds to Hgb 97
What percent of O2 dissolve in blood 3
What percent of CO2 binds to Hgb 23
What percent of CO2 dissolves in blood 7
What percent of CO2 is transported as bicarbonate, making the RBC such an important buffer system 70
If PCO2 and PO2 are the same as venous blood, then Va/Q= 0 and I have no ____. Ventilation
If PCO2 and PO2 are the same as inspired air, then Va/Q= infinity and I have no ____. Perfusion
If Va/Q is normal, PO2 in alveoli is ____ than inspired air, and ____ than venous blood Less, more
If Va/Q is normal, PCO2 in alveoli is ____ than inspired air, and ____ than venous blood More, less
The amount of CO, 2%, per minute that goes to the bronchial vessels (unoxygenated) instead of going through the alveoli, showing an abnormal Va/Q ratio Physiologic shunt
If Va/Q is more than normal, Va is good but Q is low and more O2 available than can be transported and the ventilation of these alveoli is said to be Wasted
When ventilation of anatomical dead space and areas of the respiratory pathways is wasted too, the sum of these two types of wasted ventilation is known as Physiological dead space
T or F. Once O2 diffuses from the alveoli, is transported by the blood, combined with hemoglobin which increase this transportation 30-100 times compared to simply dissolved True
PO2 in ___>____>____ and for CO2 is the other way around Alveoli, blood, tissues
With exercise a person will require as much as 20x's the amt. of O2 and the increase __, will decrease the time that blood stays in the capillaries. CO
With increase CO blood oxygenation suffers but the _______ of O2 diffusion through the Pulm. memb. maintains the blood almost sat. with O2 Great safety factor
Amount of air that can be forcefully inhaled after a normal tidal volume inhalation. Inspiratory reserve volume
Amount of air inhaled or exhaled with each breath under resting conditions Tidal volume
Amount of air that can be forcefully exhaled after a normal tidal volume exhalation Expiratory reserve volume
Amount of air remaining in lungs after a FORCED exhalation Residual volume
Maximum amount of air that can be inspired after a normal EXPIRATION. TV+IRV Inspiratory capacity
Volume of air remaining in lungs after a NORMAL tidal volume expiration. ERV+ RV Functional residual capacity
Maximum amount of air that can be EXPIRED after a maximum inspiratory effort. IRV+ TV+ERV. Vital capacity
Maximum air contained in lungs after a maximum inspiratory effort. IRV+TV+ERV+RV Total lung capacity
If Va is zero and there's still Q (perfusion ), Va/Q= Zero
If Va is perfect but there's zero perfusion , Va/Q= Infinity
At which ratio does no gas exchange exist? Zero and infinity
PO2(mmHg) in ____>____>_____ Air, alveoli, venous
PCO2(mmHg) in ____>____>____ Venous, alveoli, air
Alveolar PN2 is ___ than PN2 is tissues Less
PO2 in the pulmonary artery is_____ than PO2 in alveoli Less
PCO2 in pulmonary vein is____ than PCO2 in pulmonary artery Less
PN2 in the pulmonary artery is _____ to the PN2 in the pulmonary vein Equal
PH2O in the pulmonary artery, alveoli, and pulmonary vein are Equal
The___ system automatically adjust the rate of alveolar ventilation almost exactly to the body's demand Nervous
T or F. Due to the automatic adjustment of the respiratory system, arterial PO2 and PCO2 are hardly modified even with moderated to instense exercise or other resp. distress False. Nervous system
The respiratory center is composed of several groups of neurons located in the___, specifically at the ___ and ___. Brain stem, medulla oblongata, pons
Dosal portion of medulla oblongata. mainly inspiration. Dorsal Resp. Group
ventrolateral portion of medulla. Insp. or Expir. depending on the nerves stimulated Ventral Resp. Group
Dorsally located in the pons. Rate and pattern of breathing Pneumotaxic Center
The most important role in controlling resp is played by the___. Dorsal Resp Group
Dorsal Resp Group receives informaton from the chemoreceptors, baroreceptors, and other receptors in the lungs that help in the control
The signal transmitted to the primary inspiratory muscles is a Ramp signal
The signal transmitted to the diaphragm and external intercostals is a Ramp signal
T of F. The ramp signal starts from 0 and continues with a steady decrease for about 2 seconds. False. increase
The ramp signal starts from _ and continues with a steady increase for about_ seconds and stops for_ seconds 0, 2, 3
The duration of __ is determined by duration of ___. expiration, inspiration
The pneumotaxic center___ the duration of inspiration and ____ the respiratory rate limits, increases
T or F. Strong signals from the pneumotaxic center increase the time of inspiration False. Strong signals from the pneumtotaxic center reduce the time of inspiraton
T or F. Weak signals from the pneumotaxic center increase time of inspiration True
The ventral group is mostly involved in increased levels of ventilation
The ultimate goal of resp. is to maintain proper H+, O2, and CO2 in the ___. Tissues
T or F. Increased H+ and CO2 indirectly stimulate the resp. Center causing increase of the inspiratory and expiratory signals False. Directly
T or F. Oxygen doesnt have a direct effect on the center but acts through the central chemoreceptors located in the carotid and aortic bodies False. Peripheral chemoreceptors
The Net Diffusion of a gas in one direction is a direct effect of its ______, and its _____. Concentration gradient, surface pressure
Created by: Bvaleris
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