WGU C459 anatomy physiology EXAM A+ GRADE ASSURED COMPLETE SOLUTIONS AND VERIFIED ANSWERS LATEST UPDATE!!!!

Exam

Exam Solution
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physiology exam 4 Walker Uark 2026 A+ GRADE ASSU zm zm zm zm zm zm zm zm




RED COMPLETE SOLUTIONS AND VERIFIED ANSWERS (
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A27DD)




QUESTION 1 zm




respiratory system (main function) zm zm zm




ANSWER

supply the body tissues with oxygen and dispose of carbon dioxide generated by cellular metabolism
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QUESTION 2 zm




respiration includes zm




ANSWER

1. pulmonary ventilation 2. gas exchange 3. oxygen utilization
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QUESTION 3 zm




gas exchange
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ANSWER

-External respiration (movement of O2 from lungs into blood; CO2 from blood to lungs) -
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Internal respiration (movement of O2 from blood into tissue cells; CO2 from cells into blood)
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QUESTION 4 zm




upper airway zm




ANSWER

-Air comes in and travels to larynx (where vocal cords are)
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,QUESTION 5 zm




respiratory zone zm




ANSWER

where gas exchange happens
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QUESTION 6 zm




conducting zone zm




ANSWER

everything else -where gas exchange does not occur
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QUESTION 7 zm




cilia
ANSWER

-on epithelial surfaces -secrete mucus to keep lungs clear of particular matter
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QUESTION 8 zm




alveoli
ANSWER

-airway ends in alveolar sacs -site of gas exchange with the blood -approx 300 million in adults -
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tiny and hollow
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QUESTION 9 zm




capillaries
ANSWER

-supply to alveoli -help allow diffusion to occur quickly
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QUESTION 10 zm




type 1 alveolar cells
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ANSWER

-where gas exchange happens -most of the air-
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facing surfaces of the wall are lined by a continuous layer, one cell thick, of flat epithelial cells
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,QUESTION 11 zm




type 2 alveolar
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ANSWER

specialized cells that produce surfactant
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QUESTION 12 zm




ventilation
ANSWER

Exchange of air between atmosphere and alveoli. Thoracic Pressure differences cause lung volume c
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hanges.



QUESTION 13 zm




atmospheric pressure zm




ANSWER

-all pressures are relative to ____ -760 mmHg at sea level
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QUESTION 14 zm




Boyles Law zm




ANSWER

-volume of lungs is made to change through ____ -
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an inversely proportional relationship between pressure and volume - P1V1=P2V2
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QUESTION 15 zm




alveolar pressure zm




ANSWER

-intrapulmonary -changes to drive the movement of air -
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pressure is related to volume changes just like Cardio system
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QUESTION 16 zm




Palv

, ANSWER

-pressure in the alveoli -less than Palv=inspiration -greater than Palv=expiration
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QUESTION 17 zm




intrapleural pressure zm




ANSWER

-pressure in pleural space -Pip fluctuates with breathing, always less than Palv
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QUESTION 18 zm




collapse
ANSWER

if the Pip ever = Patm the lungs will immediately_____
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QUESTION 19 zm




pneumothorax
ANSWER

when the pressure is eliminated and the lungs collapse
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QUESTION 20 zm




real space
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ANSWER

fluid filled area would then become the ____
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QUESTION 21 zm




parietal pleura zm




ANSWER

covers the thoracic wall and superior face of the diaphragm
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QUESTION 22 zm




visceral pleural zm