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ohaa [14]
4 years ago
9

When the quadriceps contract, what also must happen at the same time? . a. The gastrocnemius must contract.. b. The gastrocnemiu

s must relax.. c. The hamstrings must contract.. d. The hamstrings must relax.
Health
2 answers:
makkiz [27]4 years ago
6 0

Answer:

The anwser is D

Explanation:

Hamstrings must relax

Cloud [144]4 years ago
3 0
Hello!

When the quadriceps contract his opposing muscle must relax, so, the hamstrings must relax. Letter d)

Hugs!
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