The structure indicated by letter G is the ________, which is considered the "working tissue" of the lung. 


alveolar sac
The alveolar sacs are considered the "working tissue" of the lung because this is where gases are exchanged.

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The thyroid is directly regulated by the:

A) Hypothalamus. B) Gonads. C) Parathyroid. D) Anterior pituitary.

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The FDA

A) assures the safety of food B) assures the safety of cosmetics C) assures the safety of medication D) all of the above

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The caudal part of the uterus is the _____

Fill in the blank(s) with correct word

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Today, federal regulations prohibit the use of drugs that would be:

A. detrimental to consumers B. too expensive for some patients C. not strong enough for the prescribed condition D. too strong for the prescribed condition

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