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How do skeletal muscles work as a pair to bend and straighten the arm at the elbow?
Wiki User
∙ 8y ago
When you bend your elbow, the biceps muscle contracts. At the same time the antagonist muscle, that is the triceps muscle relaxes in synchronized manner. Vise verse action take place, when you straighten the arm at the elbow. Triceps contracts and biceps relaxes.
Wiki User
∙ 8y ago
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What happens when you bend your arms?
your biceps contract and your triceps relax
How does a human bend an arm?
Bending an elbow is similar to bending a knee. First, your brain sends impulses through your central nervous system and throughout your nerves. Then, the impulses cause flexible muscles to contract and relax, making them lengthen and shrink. Your muscles are connected to your bones by tendons, a connective tissue. As muscles contract and relax, they pull and push on the tendons to pull and push on the bones, allowing a joint to bend. Your biceps contract and triceps relax to bend your elbow. Your biceps relax and tripceps contract to straighten your elbow.
Explain the difference between extending and flexing your arm at the elbow?
When you straighten your arm or leg (as in a pushing movement), you EXTEND the arm or leg. When you bend your arm at the elbow or your leg at the knee, you FLEX the arm at the elbow and flex the leg at the knee.
Which joint lets you bend your arm?
your elbow
What is the pulse point that is located in the bend of the elbow?
the brachial artery
What do the triceps and biceps muscles do?
The triceps muscles extend (straighten) the arm, while the biceps muscles flex (bend) it at the elbow joint.
Why are skeletal muscles often found in opposing pairs?
Skeletal muscles are found in pairs called flexors and extensors. The flexors bend a joint, and the extensors straighten the joint. Muscles cannot push; they only pull.
What works to move bones back and forth?
Skeletal muscles move bones. A pair of muscles is required to move a bone -- one muscle to straighten the joint, and another to bend the joint.
What happens when you bend your arms?
your biceps contract and your triceps relax
Are muscles that bend a joint called extensors?
Muscles that bend a joint are flexors; musces that straighten a joint are extensors.
Which muscle straightens a joint?
A muscle that straightens a joint is called an extensor.Extensors are the muscles whose contraction extends or straightens a limb or other part of the body.Extensor muscle
How does your triceps help you bend your arm?
Triceps does not help to bend your arm. It helps to straighten your upper limb across the elbow.
Why muscles have to work in pairs?
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.
Are Muscles that bend a joint called extensors and muscles that straighten a joint called flexors?
Yes, that's true.False.
where in the muscles would you find triceps?
They are the opposite muscle to the biceps. If you bend your arm to make the muscle on the top (the biceps) bulge, the muscle on the bottom (the triceps) relaxes. The triceps is on the back of your arm, and is used to straighten the elbow.
What 2 muscle work to bend or straighten your elbow?
The biceps and the triceps.-McKenzie
What is opposite of bend?
The opposite of bend is straighten.
