What is muscles?

1)What is muscles?

Muscles are soft tissues. Many stretchy fibers make up your muscles. You have more than 600 muscles in your body. Different types of muscles have different jobs. Some muscles help you run, jump or perform delicate tasks like threading a needle.

2)Different types of muscle

The three main types of muscle include:

Skeletal muscle –

the specialised tissue that is attached to bones and allows movement. Together, skeletal muscles and bones are called the musculoskeletal system (also known as the locomotor system). Generally speaking, skeletal muscle is grouped into opposing pairs such as the biceps and triceps on the front and back of the upper arm. Skeletal muscles are under our conscious control, which is why they are also known as voluntary muscles. Another term is striated muscles, since the tissue looks striped when viewed under a microscope.

Smooth muscle –

located in various internal structures including the digestive tract, uterus and blood vessels such as arteries. Smooth muscle is arranged in layered sheets that contract in waves along the length of the structure. Another common term is involuntary muscle, since the motion of smooth muscle happens without our conscious awareness.

Cardiac muscle-

 the muscle specific to the heart. The heart contracts and relaxes without our conscious awareness.

3)Things to remember

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.