zabeShay1laamber zabeShay1laamber
  • 20-04-2017
  • Biology
contestada

Tiny sacs in the lungs where oxygen exchange takes place. fundamental working unit of the nervous system. sometimes called the master gland.

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Fanglin
Fanglin Fanglin
  • 01-05-2017
The answer for the first one would be the Alveoli 

the second one is the pituitary gland
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