Question

When the quadriceps contract, what also must happen at the same time?
a. The gastrocnemius must contract.
b. The gastrocnemius must relax.
c. The hamstrings must contract.
d. The hamstrings must relax.

Answer 1

Well muscles come in opposing pairs. Typically one set of muscles is on one side of the limb and the opposing set of muscles is on the other side of the limb. Do you know whether the quads opposed by the hamstrings or the gastrocnemius?

Answer 2

i think hamstrings?

Answer 3

Yes, the hamstrings definitely oppose the quadriceps.

Opposing muscles are 'opposite' to each other in function as well as location. When one set contracts, the other relaxes. Then when the first set relaxes, the second set contracts.

Which of the options is consistent with this?

Answer 4

so d?

Answer 5

Yes, I think it is D.

Answer 6

thank u!