BIO 255 Lecture Exam 2 (Respiratory System) QUESTIONS AND VERIFIED CORRECT ANSWERS LATEST GUARANTEED PASS GRADE A-M.

BIO 255 Lecture Exam 2
(Respiratory System)
QUESTIONS AND VERIFIED
CORRECT ANSWERS




internal intercostals - CORRECT ANSWER-Which muscle is particularly used for exhalation?



frontal, ethmoid, maxillary, sphenoid - CORRECT ANSWER-What are the 4 paranasal sinuses?



alveolar macrophages - CORRECT ANSWER-keep alveolar surfaces sterile



keep alveolar surfaces sterile - CORRECT ANSWER-What is the function of alveolar
macrophages?



ACE, Ang I --> Ang II - CORRECT ANSWER-The lung capillary endothelium contains enzymes that
act on substances in blood to activate blood pressure hormone, what enzyme and what
reaction?



parietal pleura - CORRECT ANSWER-structure that is located on the thoracic wall, superior face
of diaphragm, around heart, between lungs



visceral pleura - CORRECT ANSWER-structure that is located on external surface of lungs

, pleural fluid - CORRECT ANSWER-provides lubrication and surface tension to assist in lung
expansion and recoil



provide lubrication and surface tension to help in expansion and recoil - CORRECT ANSWER-
What is the function of the pleural fluid?



inhaling - CORRECT ANSWER-inspiration = ______



exhaling - CORRECT ANSWER-expiration = _______



atmospheric pressure; 760 mm Hg - CORRECT ANSWER-pressure that NEVER changes; always
what value?



atmospheric pressure - CORRECT ANSWER-pressure that is exerted by air surrounding body



less - CORRECT ANSWER-In order to inhale, the pressure in the lungs must be _____ than 760.



greater - CORRECT ANSWER-In order to exhale, the pressure in the lungs must be ____ than
760.



intrapulmonary pressure - CORRECT ANSWER-pressure in the alveoli that fluctuates w/
breathing



intrapleural pressure - CORRECT ANSWER-pressure in the pleural cavity that fluctuates w/
breathing



intrapleural pressure - CORRECT ANSWER-Which pressure is ALWAYS a negative pressure?