Please answer instantly.......be very QUICK!!!
2006-12-22 07:34:29 · 11 answers · asked by Anonymous in Science & Mathematics ➔ Biology
The opposing muscle relaxes. In most cases you have to have an opposing muscle since muscles can contract but they can't lenghten. The opposing muscle is what lenghtens them.
2006-12-22 07:37:31 · answer #1 · answered by richarddelightful 2 · 2⤊ 0⤋
For every action a muscle makes, there needs to be a second muscle to pull it back to it's neutral position... whether it's pulling your leg out sideways, then back to neutral, out forward, out backward, rotating the foot, etc. It's not just in the legs, by the way.
2016-05-23 16:25:24 · answer #2 · answered by ? 4 · 0⤊ 0⤋
There are antagonistic muscle groups with flexor and extensor pairs. One contracts and shortens (flexor) and the other relaxes and lengthens (extensor). e.g. to move your arm towards your shoulder, the biceps muscle contracts and the antagonistic muscle, the triceps, relaxes. to move your arm away, the opposite happens.
2006-12-22 14:44:11 · answer #3 · answered by qwerty 3 · 1⤊ 0⤋
The other muscle relaxes
2006-12-22 07:45:38 · answer #4 · answered by Ismail Kh 2 · 0⤊ 0⤋
It relaxes, and thus stretches.
That's why muscle cramps (or "knots") impede movement. They prevent the corollary muscle from stretching, this limiting range of motion.
2006-12-22 07:38:05 · answer #5 · answered by coragryph 7 · 2⤊ 1⤋
WHEN ONE MUSCLE CONTRACTS, THE OTHER MUSCLE RELAXES.
EXAMPLE: Bicep muscle (in upper arm) CONTRACTS > tricep muscle (in your forearm) RELAXES so you can lift your forearn.
Hope this helps!! :) :) :)
2006-12-22 10:54:18 · answer #6 · answered by lemon drops 3 · 0⤊ 1⤋
Relaxes.
2006-12-22 08:36:36 · answer #7 · answered by Anonymous · 0⤊ 1⤋
Stretch? Just a random guess.
2006-12-22 07:35:53 · answer #8 · answered by Anonymous · 0⤊ 2⤋
one contracts (shrinks), the other expands.
2006-12-22 07:38:12 · answer #9 · answered by Regular Guy 5 · 0⤊ 1⤋
rests
2006-12-22 07:36:03 · answer #10 · answered by Anonymous · 0⤊ 0⤋