support sytems by bianca
The Skeletal System And Muscular System
The skeletal system and muscular system
The skeletal system has 206 bones. And the joints between bones allow movement. The skeleton provides the framework witch supports the body and maintains its shape.And the muscular system moves the body.The skeletal system has a soft, inside that is part of the bone is called the marrow. The muscular system moves the body. The muscles move by contracting , or becoming shorter. when the heart muscles relax , blood from it enters the heart. the muscles quickly tighten up to squeeze the blood back again. The actin is called a heart beat. The heart beats about 70 times each minute. The skeletal system is also the bone of the body.
the human skull.
The Skull is bony frame of the head of human being's and other vertebrates.It is a case made up of bones that enclose the brain and bones that form the face. the human skull has 22 bones.
the muscles is the tough elastic tissue that makes body parts move. people use muscles to make various moments.such as walking,jumping and trowing.
Bones hold your body parts together so they don't fall apart. if you didn't have bones you would be a big pile of skin.