hariane10
Answered

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1. What is the main function of muscles?
2. How many muscles are there in the
human body?
3. What s the difference between tendons and ligaments?
4. What must a riuscle do to move a bone?
5. How do niuscles work together to move parts of the body?​

Sagot :

arangurensymonphilip

Answer:

1.The muscular system is composed of specialized cells called muscle fibers. Their predominant function is contractibility. Muscles, attached to bones or internal organs and blood vessels, are responsible for movement. Nearly all movement in the body is the result of muscle contraction.

2.There are about 600 muscles in the human body. The three main types of muscle include skeletal, smooth and cardiac. The brain, nerves and skeletal muscles work together to cause movement – this is collectively known as the neuromuscular system.

3.A tendon serves to move the bone or structure. A ligament is a fibrous connective tissue that attaches bone to bone, and usually serves to hold structures together and keep them stable.

4.By contracting, muscles pull on bones and allow the body to move. Muscles can only contract. ... Each muscle in the pair works against the other to move bones at the joints of the body. The muscle that contracts to cause a joint to bend is called the flexor.

5.Muscles move body parts by contracting and then relaxing. Muscles can pull bones, but they can't push them back to the original position. So they work in pairs of flexors and extensors. The flexor contracts to bend a limb at a joint.

Explanation:

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