Question

How does the muscular system help humans maintain posture? Muscles continually align themselves vertically to help maintain posture. Muscles continually push bones to be straight. Muscles constantly contract to help fight gravity. Muscles constantly contract to help work with gravity.

Answer 1

Answer:

C) Muscles constantly contract to help fight gravity.

Explanation:

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Answer 2

The muscular system helps humans by constant contraction of muscle to help fight gravity.

What is muscular system?

• "The muscular system is composed of specialized cells called muscle fibers."

There are three types of muscle fibre: skeletal muscle, smooth muscle and cardiac muscle.

• Skeletal muscles are striated voluntary (control by your will) muscle. It connects to the bones, tendons, ligaments and cartilage.
• Smooth muscles are striated involuntary (cannot be controlled by our will) muscle. It lines the organs and body cavity.
• Cardiac muscles are unstriated involuntary muscles. It composes heart muscle.
• The main function of muscle is to provide movement, posture, protection and support.
• The muscle contract and relax to fight against gravity, which enables body movement and posture.

What is gravity?

• "It is the force that attracts a body towards the centre of the earth, or towards any other physical body having mass."

Hence, the correct answer is: Muscles constantly contract to help fight gravity.

To know more about muscle contraction here

https://brainly.com/question/17992013

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