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question 1
in the pulmonary circulation, ____ is expelled from the blood and ____ is picked up.
a oxygen, carbon dioxide
b oxygen, nitrogen
c carbon dioxide, nitrogen
d carbon dioxide, oxygen
e nitrogen, oxygen

question 2
the scientific name of the \windpipe\ is the:
a larynx
b pharynx
c trachea
d vocal cords

Explanation:

Question 1: Pulmonary circulation involves blood exchanging gases in the lungs—carbon dioxide (waste) is expelled, and oxygen (needed for cells) is picked up.
Question 2: The "windpipe" is the common name for the trachea, a tube connecting the larynx to the bronchi.

Answer:

Question 1: D. Carbon dioxide, oxygen
Question 2: C. Trachea