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AnnZ [28]
3 years ago
8

_are structures that allow for one-way blood flow through the heart HELP!!!!

Chemistry
2 answers:
seraphim [82]3 years ago
6 0

Answer:

Ventricles

Explanation:

blsea [12.9K]3 years ago
6 0

Answer:

Its valves

Explanation:

i got an 100 on the test.

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