Human Body Galaxy — Interactive 3D Human Body Browser & Anatomy Explorer
Human Body Galaxy is the best free interactive 3D body browser online. Explore all 10 human body systems —
cardiovascular, nervous, respiratory, digestive, skeletal, muscular, endocrine, lymphatic, urinary, and reproductive —
from organ level all the way to cells and DNA structure. No download required.
Explore All 10 Human Body Systems
- Cardiovascular System — Heart, arteries, veins, and 60,000 miles of blood vessels. The heart pumps 2,000 gallons of blood daily.
- Nervous System — Brain, spinal cord, and 86 billion neurons transmitting signals at 120 m/s. More synaptic connections than stars in the Milky Way.
- Respiratory System — Lungs, trachea, and 300 million alveoli. We breathe 20,000 times per day through a surface area the size of a tennis court.
- Digestive System — Stomach, liver, pancreas, and a 9-meter digestive tract. The liver performs over 500 metabolic functions.
- Skeletal System — 206 bones providing structure and producing 2 million red blood cells per second in bone marrow.
- Muscular System — Over 600 muscles powering every movement. It takes 200 muscles just to take a single step.
- Endocrine System — Pituitary, thyroid, adrenals, and pancreas producing hormones that regulate metabolism, mood, and growth.
- Lymphatic / Immune System — Spleen, thymus, and 600+ lymph nodes defending against infection with billions of T and B cells.
- Urinary System — Kidneys filtering all blood every 30 minutes through 1 million nephrons, producing 1–2 liters of urine daily.
- Reproductive System — Producing sex hormones and 1,500 new sperm cells every second.
Interactive Anatomy Features
- 3D body browser — explore human anatomy from organ to cell to DNA
- AI-powered anatomy tutor — ask any anatomy question and get instant answers
- Adaptive quizzes — gamified learning with streak bonuses and difficulty scaling
- Disease connections — see how conditions like heart disease affect each organ
- VR mode — immersive WebXR anatomy exploration (VIP subscribers)
- Personal learning paths — 52-week MCAT, NCLEX, and anatomy courses (VIP subscribers)
For Medical Students, Educators & Curious Learners
Human Body Galaxy is used by medical students preparing for the MCAT, nursing students studying for the NCLEX,
high school biology teachers, and anyone curious about how the human body works. The free tier covers all body systems.
Premium ($79.99/year) and VIP ($149.99 lifetime) plans unlock advanced features.
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