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Kaetlynrenae Kaetlynrenae
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6 years ago
Exhalation _____.
 
  a. is always active
  b. is always passive
  c. may be both active and passive
  d. compresses alveoli
  e. may be both active and passive, and compresses alveoli

Question 2

A unique feature of the diaphragm is that it is_____.
 
  a. the only smooth muscle in the human body
  b. the only smooth muscle that can be voluntarily controlled
  c. only found in humans
  d. the only skeletal muscle that is under involuntary control
  e. easily replaceable
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butterflybutterfly
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6 years ago
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Kaetlynrenae Author
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6 years ago
Helped a lot
vanna2014
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Yesterday
Thank you, thank you, thank you!
Harvinder
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2 hours ago
Smart ... Thanks!
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