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EXPH 386 Exam 5 Questions and Answers
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EXPH 386 Exam 5 Questions and Answers
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EXPH 386 Exam 5YES - Answer-Does every capillary have a thick and thin side?
Collagen - Answer-What does the thick side of the capillary contain?
The honeycomb alveolar structure - Answer-What gives the lung strength?
0.75 seconds - Answer-How long does gas exchange have to take place?
YES - Answer-Does gas exchange have to be faster during exercise?
Surface Tension - Answer-A force acting only at a gas-liquid interface
YES - Answer-Is the lung fragile and delicate but also strong?
YES - Answer-Is the lung the only organ (other than the heart) to receive the entire cardiac output?
-Gas Exchange
-Filtering (blood and air)
,-Vocalizations (speaking, singing, etc.) - Answer-What are the 3 functions of the lung?
Filtering (blood and air) - Answer--Captures inhaled particles
-Breakdown vasoactive substances
Breakdown Vasoactive Substances - Answer--Converts angiotensin I to angiotensin II
-Bradykinin
-Serotonin
-Norepinephrine
-PGE2 and PGF2 alpha
-Leukotrienes
Because of their contact with the outside environment - Answer-Why do the lungs have epithelial cells?
Epiglotis - Answer-Protects the windpipe/trachea, prevents food/water from going down the wrong
hole
For protection - Answer-Why is the air to the lungs moist?
Heats it - Answer-What does the nose do to air?
Nose - Answer-Do we almost always breath through our mouth or nose?
Trapping dust particles and keep them from entering our body - Answer-What do the hairs in our nose
help with?
, Lingula - Answer-Tongue-like structure
The middle lobe - Answer-What would the lingua be if the heart didn't take up that space?
1500 miles - Answer-What is the total length of airways running through the two lungs?
Your height - Answer-What does the size of your lungs best correlate with?
A gas barrier - Answer-What is very thin blood good for?
Airways - Answer--Trachea
-Bronchi
-Bronchioles
-Alveoli
Pleural Space - Answer--Small when lungs are inflated
-Space between the lungs
Muscles of the Lungs - Answer--Diaphragm
-Intercostals
Alveoli - Answer--The lungs contain 300-600 million
-Thin walled (single epithelial cell)
-Elastic
-Pores of Kohn
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