Question

How many muscles are used in the movement of a bone?
(A)1
(B)2
(C)3
(D)4

Answer 1

Hint: Muscles pull on the joints, allowing us to move. A pair of muscles are used for any type of movement of a bone. Even if we are sitting perfectly still, muscles throughout the body are constantly moving.

Complete answer:
Two muscles are used in the movement of a bone. 2 muscles i.e flexor and extensor are involved within the movement of the bone. This is often because a muscle cannot work in 2 directions. It can only pull a bone towards itself, but cannot push it.

Additional Information: Humans have three different sorts of muscle:
-Skeletal muscle is attached by cord-like tendons to bone, like within the legs, arms, and face. Skeletal muscles are also known as the striated muscle because they're made up of fibers that have horizontal stripes when viewed under a microscope. These muscles work to hold the skeleton together, give the body shape, and help it with everyday movements. they will contract quickly and powerfully, but they tire easily.
-Smooth, or involuntary, muscle is additionally made from fibers, but this sort of muscle looks smooth, not striated. we will not consciously control our smooth muscles; rather, they're controlled by the nervous system automatically. Examples of smooth muscles are the walls of the stomach and intestines, which help hack food and move it through the gastrointestinal system.
-Cardiac muscle is found within the heart. The walls of the heart's chambers are mainly composed of muscle fibers. Heart muscle is additionally an involuntary sort of muscle. Its rhythmic, powerful contractions force blood out of the guts because it beats.
So, the correct answer is ‘2’.

Note: The human body has over 600 muscles. They are doing everything for us like pumping blood throughout the body to helping us lift something heavy. Although according to some research, some figures go up to as many as 840.