HUMAN NUTRITION

NUTRITION

THE HUMAN BODY

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
What is the job of muscles?
A
to make bones move
B
to show how strong you are
C
to protect internal organs
D
None of the above
Explanation: 

Detailed explanation-1: -Your muscle fibers contract (tense up) in response to the message. When the muscle activates or bunches up, it pulls on the tendon. Tendons attach muscles to bones. The tendon pulls the bone, making it move.

Detailed explanation-2: -Skeletal muscles comprise 30 to 40% of your total body mass. They’re the muscles that connect to your bones and allow you to perform a wide range of movements and functions. Skeletal muscles are voluntary, meaning you control how and when they work.

Detailed explanation-3: -The muscles of the muscular system keep bones in place; they assist with movement by contracting and pulling on the bones. To allow motion, different bones are connected by joints which are connected to other bones and muscle fibers via connective tissues such as tendons and ligaments.

Detailed explanation-4: -The muscles work in pairs. When one of them contracts, the bone is pulled in that direction, and the other muscle of the pair relaxes to move the bone in the opposite direction. the relaxed muscle contracts to pull the bone toward its original position, while the first muscle relaxes. A muscle can only pull.

There is 1 question to complete.