Movement
How many bones are in the human body? 206
What is the inside of bone like? porous, spongy
Does bony tissue contain cells? yes
From what tissue do bones develop? cartilage
What are muscles made of? proteins
What attaches muscle to bone? tendons
What ion is needed for muscle movement? calcium
What are the two major components of muscle fibers? actin and myosin
What role does the circulatory system play in muscle movement? transports oxygen to muscle cells
What are the upper chambers of the heart? atria
What are the lower chambers of the heart? ventricles
What side of the heart pumps blood to the body? left
What side of the heart pumps blood to the lungs? right
What is the pacemaker (spark plug) of the heart? S-A node
How much of the body’s oxygen supply does the heart use? 10%
How much of the body’s blood supply is needed by the brain? 15%
What systems of the body are involved in long jumping? skeletal, muscular, circulatory, nervous