Body systems
Skeletal and muscular systems
The human skeleton provides several functions including support, protection, movement and making blood cells. Antagonistic muscles work against each other in pairs.
The human reproductive system
The human reproductive system is different in males and females. When a sperm and egg join, the egg is fertilised and a baby starts to develop. Its mother provides all a baby鈥檚 needs until it is born.
Respiration
Respiration releases energy from glucose so that life processes can carry on. Aerobic respiration needs oxygen but anaerobic respiration does not. The respiratory system is adapted for gas exchange.
