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BIOD 151 Module 2 Exam Questions and Verified Answers- Portage Learning (GRADED A+) $19.49   Add to cart
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BIOD 151 Module 2 Exam Questions and Verified Answers- Portage Learning (GRADED A+)

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BIOD 151 Module 2 Exam Questions and Verified Answers- Portage Learning (GRADED A+)

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  • May 14, 2024
  • 16
  • 2023/2024
  • Exam (elaborations)
  • Questions & answers

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  • biod 151 module 2 exam
  • biod 151 module 2 exam verified answers
  • biod 151 module 2 exam questions and answres
  • biod 151 module 2 exam with graded answres

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BIOD 151 Module 2 Exam Questions and Verified Answers - Portage Learning (GRADED A+ ) when bronchioles get smaller and reach the respiratory bronchioles - ANSWER -the amount of goblet cells, ciliated cells, and car tilage decreases all are absent from the respiratory bronchioles level three major cell types of alveoli - ANSWER -1) type I alveolar cells 2) type II alveolar cells 3) macrophages what are the two epithelial cell types in the alveoli - ANSWER -
type I and type II alveolar cells Type I alveolar cells - ANSWER -simple squamous epithelium in junction with capillaries 95% of alveolar epithelium Type II alveolar cells - ANSWER -produce and secrete pulmonary surfactant that helps keep alveoli open 5% of alveolar epithelium can divide to replace damaged type I alveolar cells alveolar macrophages - ANSWER -dust cells function of alveolar macrophages - ANSWER -destroy toxic particles, allergens or infectious materials such as bacteria and other pathogens primary immu ne defense system of alveoli Steps of Respiration (gas exchange) - ANSWER -1) breathing 2) external respiration 3) internal respiration 4) aerobic cellular respiration breathing - ANSWER -movement of air into and out of the lungs includes inspiration and expiration inspiration - ANSWER -breathing in expiration - ANSWER -breathing out external respiration - ANSWER -exchange of gases between the atmosphere and the blood internal respiration - ANSWER -exchange of gases between blood a nd tissues aerobic cellular respiration - ANSWER -Process of making ATP for cellular work gas exchange in respiratory system - ANSWER -happens via diffusion qualities of an effective gas exchange region - ANSWER -1) moist 2) thin 3) large relative to size of the body Diffusion is enhanced by - ANSWER -extensive vascularization of the lungs delivery of O2 to cells is promoted by - ANSWER -an O2 carrying molecule such as hemoglobin positives and negatives of air - ANSWER -pos: richer source of O2 than water neg: has drying effect on respiratory surfaces what happens when relative humidity of air is only 50% - ANSWER -the lungs lose about 350ml H2O a day ventilation - ANSWER -movement of air in and out of the lungs Rib cage during inhalation - ANSWER -lifts superiorly and anteriorly to expand and open up lungs

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