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xz_007 [3.2K]
3 years ago
12

When people run long distances, their muscles require increased amounts of oxygen. Which system is responsible for carrying this

oxygen to the muscles?
Nervous


Respiratory


Digestive


Circulatory
Biology
2 answers:
leva [86]3 years ago
6 0
It would be the respiratory system
goldenfox [79]3 years ago
3 0

The answer is Circulatory system.

your lungs need Oxygen (duh) just think for a second.

your nervous system is like your veins ans stuff like thats so it cant be that.

the digestive system i mean COME ON-

you obviously know what that is. does food go in your lungs? no. no it doesnt. so eliminate that. ok now we have respiratory system and circulatory system. ok i maybe forgot what respiratory system is but i know its not the answer. there.

bOoM.

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