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APHY 102 Exam 4 Questions and Answers A+ Graded R212,56   Add to cart
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APHY 102 Exam 4 Questions and Answers A+ Graded
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APHY 102 Exam 4 Questions and Answers what enhances turbulence in the inhaled air? nasal conchae what structure seals the larynx when we swallow? epiglottis what is the conducting zone structure? terminal bronchiole what part of the lung receives air directly from a segmental (te...

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  • April 26, 2024
  • 5
  • 2023/2024
  • Exam (elaborations)
  • Questions & answers

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APHY 102 Exam 4 Questions and Answers
what enhances turbulence in the inhaled air?
nasal conchae


what structure seals the larynx when we swallow?
epiglottis


what is the conducting zone structure?
terminal bronchiole


what part of the lung receives air directly from a segmental (tertiary) bronchus?
bronchopulmonary segment


what vessel delivers oxygenated systemic blood to lung tissue?
bronchial artery


what event occurs first during inspiration?
the diaphragm contracts


what happens during quiet expiration?
the dome-shaped diaphragm rises as the inspiratory muscles relax


what respiratory volume/capacity refers to the total amount of exchangeable air?
vital capacity


what is internal respiration?
carbon dioxide diffuses from the tissue cells to blood


when is hemoglobin most saturated with oxygen?
at sea level in the lungs


what is the function of the respiratory system in the brain stem?
the ventral respiratory group appears to generate the basic respiratory rhythm.


what happens when arterial PCO2 increases?
excitation of central chemoreceptors in the brain stem


what would result in cutting the phrenic nerves?
paralysis of the diaphragm


what laryngeal cartilages are paired?
epiglottis and cricoid

, what initiates the inflation reflex?
overinflation of the alveoli and bronchioles


what is the detergent-like substance that keeps the alveoli from collapsing between breaths?
surfactant


what determines the direction of gas movement?
partial pressure gradient


what happens when the inspiratory muscles contract?
the site of the thoracic cavity increases in length and diameter


what provides the nutrient blood supply of the lungs?
the bronchial arteries


what allows oxygen and carbon dioxide to exchange in the lungs?
diffusion


oxygen carried in the blood is what?
chemically combines with heme in red blood cells


what has the greatest stimulating effect on the respiratory centers in the brain?
carbon dioxide


what is the major site for nutrient absorption?
small intestine


what does the enteric nervous system do?
provides nerves for the alimentary canal


what does the visceral peritoneum cover?
digestive organs


what does the hepatic portal do?
collects blood from the GI tract and takes it to the liver


what is the serosa?
the outermost layer of the alimentary canal


what is the mucosa?
the main site of nutrient absorption

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