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When you Bend your Leg your hamstring contracts and your quadriceps relax
Wiki User
∙ 15y ago
Wiki User
∙ 11y agoWhen muscles contract they cause joints to bend.
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When you straighten your leg what muscles contract and relax?
Ummm I think chicken legs :P
What muscles relax when the agonist muscles contract?
in the arm: bicep contracts (agonist) triceps relax (antagonist) in the leg: hamstrings contract (agonist) quadriceps relaxes (antagonist) remember the agonist is the muscle "agonising" to do the work - like pulling the joint.
Are your leg muscles smooth muscles?
No, the muscles in your leg are skeletal muscles. Smooth muscle is found for example in vessels and the gastrointistinal tract. Yes smooth muscles are involuntary, which means they contract and relax without our conscious decision for them to do so, however we have control over when we want to move our leg muscles, so it cannot be smooth muscle, they are as said before my answer, quite rightly, skeletal muscles
Do leg muscles contract to enable you to raise your foot?
yes
How do you straiten your leg?
You extend the muscles neccisary, and contract others.
If your brain tells your leg muscles to contract what carries the message to the leg muscle?
the nerves and the nervous system
What tissue is used to straighten the leg?
The muscles in a leg are used to straighten it. They lengthen and contract to move and control leg movement, including straightening.
What muscles are used on a heel raise?
Gastrocnemius and Soleus with leg straight, to isolate gastrocnemius bend knee.
What muscle are used to flex the leg?
The quadricep and the hamstring flex the leg. When you flew, your quads tense up and contract while the hamstrings relax. When your leg is at rest , your hamstrings contract and your quads are relaxed.
Can muscles only extend?
No, they can also contract, they do every time you use them to move an arm, a leg, etc..
What leg muscles are used while running backwards?
Glutes, hamstrings and quads. glutes contract to bring leg back, and so do hamstring. Quads then contract to push off once the leg has made contact with the ground (a bit like a squat)
When lift or carrying you should never do what at the waist?
You should not bend down at the waist and lift up a heavy parcel using your back muscles. Always bend down at the knees, keep your back straight, and lift using your leg muscles.
