Why do muscles have to work in pairs?

Answer 1

what ever the last person say was wrong, its when lets said ur lifting a weight, with ur biceps & triceps, going toward you and back, when you go toward, ur bicep is getting the workout, and the triceps is relaxing, but when the weight is farther away from you, ur bicep is relaxed, and ur triceps is getting the work out.

so

they work together, one working while one relaxes, then they" switch shifts "

hope i could help

<3

P.S. i just learned this while i was doing my hw,2 minutes ago,i was looking up the question too. =]

Answer 2

Many of the muscles in the human body work in pairs in order to produce the movement of our skeleton. These muscles are located on opposite sides of the bone, and function so that when one is contracted the other is relaxed. This is referred to as antagonistic muscle action. Many of the muscles that we use to move our limbs work in this way.

Answer 3

Skeletal muscles only pull in one direction. For this reason they always come in pairs. When one muscle in a pair contracts, to bend a joint for example, its counterpart then contracts and pulls in the opposite direction to straighten the joint out again.

Answer 4

cause working by themselves makes them lonely

Answer 5

While on muscle contracts, the other muscle in the pair relaxes to its original length. <from 7th grade California Focus on Life Science by. Prentice Hall pg.529 key term.>

Answer 6

When one muscle pulls, the other muscle relaxes.

Answer 7

I dont know thats why i am asking

U

Answer 8

Muscles can only pull,not push.