Human Anatomy Guide

1

Navigate Body Systems

Click on tabs to explore different body systems: Skeletal, Muscular, Circulatory, Nervous, Digestive, and Respiratory.

2

Explore Organs

Click organ buttons to highlight them in 3D. View detailed information about each organ's function and composition.

3

3D Interaction

Click and drag to rotate the body. Scroll to zoom in/out. Use "Auto Rotate" for a complete view.

Human Body Composition

Major Elements

ElementSymbolPercentageFunction
OxygenO65%Water, cellular respiration
CarbonC18%Organic molecules, DNA
HydrogenH10%Water, pH balance
NitrogenN3%Proteins, DNA
CalciumCa1.5%Bones, teeth, signaling
PhosphorusP1%Bones, ATP, DNA

Molecular Composition

  • Water (H₂O): 60-70% of body weight
  • Proteins: 15-20% - muscles, enzymes, hormones
  • Lipids: 15-25% - energy storage, cell membranes
  • Carbohydrates: 1-2% - quick energy source
  • Nucleic Acids: DNA, RNA - genetic information
  • Minerals: 4-6% - bones, electrolytes

Body Systems

Organ Details

Select an Organ

Click on an organ from the list to view detailed information about its structure, function, and composition.