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The reason the contract and relax is because they move you arms up and down. When you straighten your arm, the bicept relaxes and the tricept contracts. When you pull your arm up ( flex ) the bicept contracts and the triceps relaxes.
By the way, I'm 11!
Adrenaline and cortisol get into your blood stream which make blood vessels open wide, letting more blood flow to the muscle which then put your muscles on alert. or tense.
Lack of oxygen or, more likely, lack of removal of waste products.
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What does the verb 'tense' mean?
When you tense a muscle, you are tightening it or contracting it. The opposite is to relax.
What happens to the bones when muscle shortening?
What happens to the bones when muscle shortening
What is a setence for the word tense?
I felt very tense and stressed out. A tense muscle can ache. The teacher asked students to identify the verb tense used in the sentence.
Is told a verb that happens now?
If "happens now" means present tense, no. Told is the past tense of tell.
Why do you get tension?
The main cause of tension is: when your angry you tense your muscle. Or wether you on a scary ride you get scared and tense your muscles then
What happens to the muscle tissue when exercising?
muscle contraction
What can cause muscle cramping under the chin?
maybe a tense jaw
What muscle tenses the neck during shaving?
The Platysma muscle in tense during shaving
What happens when an entire muscle contracts strongly and stays contracted?
when a muscle cramps
When a muscle pulls what happens?
you have then stretched your tendon / muscle beyond the normal range .
What happens to muscle if you tighten it?
after a long period of exercise a muscle can cramp
What type of muscle contraction happens in a bench press?
a concentric muscle action.
