The human body has several systems that work together. Here are the main ones:
Skeletal System: Provides support and protection
Muscular System: Enables movement
Nervous System: Controls thoughts and actions
Cardiovascular System: Circulates blood
Respiratory System: Helps us breathe
Digestive System: Processes food
Endocrine System: Regulates hormones
Excretory System: Removes waste
Reproductive System: Enables reproduction