0
Anonymous
Ifk
Add your answer:
Earn +20 pts
What muscles contract and relax when you bend your leg?
When you Bend your Leg your hamstring contracts and your quadriceps relax
To bend the ankle which muscle must contract?
The ankle bends two ways, anterior (up) and posterior (down), so it depends. The bend the ankle down (point the toe), the gastrocnemius muscle (calf) must contract. To bend the ankle up (lift the toe) the tibialis anterior muscle must contract.
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.
How do muscles bring about movement in an organism?
Contraction of the biceps and the relaxation of the triceps bend the arm .In straightening the arm the triceps contract and the biceps relax
How does your brain send messages to move?
Your brain sends electrical impulses to your muscles that cause them to contract and relax causing your limbs to bend and straighten. And it does it 10 times faster than you can blink.
Why can you bend your arms?
When you bend your arm your brain send signals to your arm muscles telling the biceps, your upper arm muscles, to contract, go taut or stretch, while telling your triceps, lower arm muscles, to relax, become less tense or ease. Both of these muscles act as an antagonistic pair and work together to bend the arm. Each muscle uses the bones in your arm, the Humerus, the ulna and the radius, as an anchor.MonkeyLover-Dinda
What happens when you bend your muscles when you bend your arm at the elbow?
i think that the upper arm is gonna be workinq but in the bottom is gonna be in rest.( Different Person) Your upper muscles, also known as the biceps, will contract, also known as swell up, while your lower muscles, also known as triceps, will relax. when you straighten your arm the muscles reverse.you are so stupid y would you even put answers out like that? man you whack
How are triceps and biceps useful?
When your biceps contract (and your triceps relax), your arm bends at the elbow. When your triceps contract (and your biceps relax), your arm straightens. The biceps and triceps enable you to bend or extend your arm at the elbow.
What happens when you bend your arms?
your biceps contract and your triceps relax
Describe the action of your muscles when you bend your arm and then straighten it again?
The muscles in your arm never expand; so when you bend your arm, your biceps contract as your triceps return to their regular form. When you extend your arm, you triceps contract as your biceps return to their regular form.
When muscles contract they cause oarts of the body to bend. IS it extensor or flexor for the blank?
I meant parts not oarts. please help?!?!
Muscles that bend a limb are called?
muscles bend limbs by pulling, they can not push. the answer is; a muscle is a muscle.
