Nervous System
Skeletal System
Muscular System.
The Nervous System fires electrical signals to your muscles, galvanizing them into action and making them move. The Skeletal System helps to support the Muscular System and move blood throughout your body so your body can receive oxygen. Your Muscular System in turn keeps your heart beating and helps you with locomotion.
Carbon moves from plants and animals to soils. When plants and animals die, their bodies, wood and leaves decays bringing the carbon into the ground.
The blood then flows through the <span>open tricuspid valve. </span>
The vertebrate endoskeleton is internal while an arthropod's exoskeleton is not
