The smallest muscles, like the smallest bones, are found in the middle ear, some of these are the tensor tympani (connected to the ear drum) and the Stapedius.
Muscles make up about 40% of total body weight.
The strongest muscles in the body? Pound for pound, it's the muscles that you chew with - called the masseters.
Muscles cannot push, they can only pull. The reason the arm can push is muscles in the back of the arm pulling on the elbow.
If all of the muscles in the body could all pull in one direction, it would create a force of 25 tons.
Humans are born with all of the muscle fibers they will ever have. They don't grow new fibers, they just grow thicker.
Smiling takes 17 muscles in the face, while frowning takes 43.
All muscles are made from basically the identical material, very elastic (like rubber bands) and composed of thousands of small fibers. You can find three different types of muscle, cardiac, smooth and skeletal muscle.
The skeletal muscles, which are those that can be managed by conscious thought, function with the skeleton or the bones, to move your body. They attach to the skeleton with tendons, which are cords of tough tissue.
The heart is composed of muscle, known as cardiac muscle. This muscle functions all by itself with no thought. The heart beats anywhere from 60 to 100 times per minute, each minute, of each day in a human life.
Skeletal muscles are also occasionally called striated muscle, this name originates from the light and dark parts of the muscle fibers making them appear striped (striated means striped).
Some of the largest muscles are in the back, close to the spine. They are in charge of keeping the body upright and provide the body the power it needs to lift and push things.
Muscles are how we move and live. All motion in the body is managed by muscles. Some muscles work without us thinking, such as our heart beating, while other muscles are managed by our thoughts and permit us to do things and move around.
Muscles work by expanding and contracting. Muscles have long, thin cells which are grouped into bundles. Whenever a muscle fiber receives a signal from its nerve, proteins and chemicals release energy either to contract the muscle or relax it. When the muscle contracts, this pulls the bones it is connected to closer together.Lots of our muscles come in sets. An example of this is the triceps and biceps in our arms. When the biceps contract the triceps will relax, this permits our arm to bend. Whenever we want to straighten our arm back out, the biceps will relax and the triceps will contract. Muscle sets allow us to move forth and back.