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What else can I help you with?
What happpens to the bicep when arm is bent?
it contracts
What happens to the muscles when the arm is bent?
it goes to the loo to have a wee
What muscles are used in a bent arm pullover?
chest and lats
How do muscles work with bones to straighten the bent arm?
Well remember that the musleoves the bone one way and that one way is the bent
Which muscles straighten the arm?
no it isnt because the arm is bent by the flexor muscles (mostly just the biceps), and straightened by the extensor muscles (ie. the triceps).
Do muscles always work in pairs?
Yes they do, they're called antagonistic pairs. However, I have also heard that there is a paradox that happens when you try to stand up from a sitting position which should be impossible because your hamstings and quadriceps are both contracting at the same time rather than one contracting and the other relaxing as antagonistic pairs should work.
What muscle causes a joint to straighten when it contracts?
The muscle that causes a joint to straighten when it contracts are the extensor muscles. These include the triceps that work with the biceps to extend the arm.
How do muscles work in pairs to move a bone?
Well you have two muscles in your arm: the bicep and tricep. In order to make the arm move the two muscles must flex while the other extends and vice versa. So the bicep flexes and the tricep extends (the arm is bent). The bicep extends and the tricep flexes (the arm is straight)
Why does your muscle form a hump when your arm is bent?
A muscle can do one of two things: it can contract, or it can relax. If the muscle is connected by tendons to bones, it will then pull on those bones when it contracts, and it will stop pulling on them when it relaxes. The arrangement of bones and muscles in the human arm allows muscles to bend the arm, by contracting. Also, muscles work in pairs. One muscle bends the arm while another straightens it out again. A single muscle can only pull in one direction, so you need a combination of muscles to be able to move around in a useful manner.
What does one muscle do while the other one relaxes?
contracts - for antagonistic muscle pairs e.g. muscles in arm (when one relaxes, other contracts, and vice versa)
What does muscles work in pairs mean?
Skeletal muscles are arranged as opposing pairs because, although they can shorten themselves by contracting, they have to be stretched back to their former length by other muscles. An example of opposing muscles is in the arm, where the biceps and triceps have opposite actions. As one muscle shortens, the other is stretched. The biceps contracts to bend the arm at the elbow while the triceps stretches. To straighten the elbow joint, the triceps contracts, while the biceps stretches.
What happens to the bicep when your tricep contracts?
When the biceps contracts the triceps relaxes slowly. It happens when your arm is bent.
