Which of the following is not a main function of the muscular system? To attach to bones and help the body move

To protect the body's internal organs

To control the flow of blood into and out of the heart

To produce mucus to lubricate the body's joints

The soviet union beat the us to the first successful launch, with the october 4, 1957, orbiting of sputnik 1, and later beat the us to have the first human in earth orbit, yuri gagarin, on april 12, 1961. the "race" peaked with the july 20, 1969, us landing of the first humans on the moon with apollo 11