Interactive anatomy · clinical knowledge · learning

Explore the Human Body. Understand Medicine.

Interactive 3D anatomy connected to physiology, symptoms, conditions, tests, imaging, procedures and medicines. Start from a structure or a symptom and follow the links either way.

Try the heart, chest pain, ECG, MRI, statins or CPR.

2,299modelled pieces
1,736named structures
329clinical & learning topics
6,020links between them
The 3D atlas showing the muscles, skeleton and vessels of the whole body

Start from the body

Explore

3D anatomy explorer

Orbit, click and search every one of 2,299 pieces. Toggle systems, isolate organs, slice the body on three planes, explode it into parts.

Streams in seconds · works on phones
Anatomy

Organs & structures

48 anatomy pages: location, structure, blood supply, function and clinical relevance, with a 3D model wherever the atlas holds the organ.

20 full articles
Anatomy

Body systems

19 system pages with overviews, functions, clinical notes, every modelled structure and the topics that concern them.

Learn

Physiology

35 topics on how the body works: the cardiac cycle, gas exchange, nerve signals, digestion, kidney filtration and hormone control.

Learn

Medical terminology

156 terms: directions, planes, movements, regions, word parts, disease processes and clinical terms, each linked into the atlas.

Study

Quizzes, flashcards & viva

Identify or locate highlighted structures in 3D, flip through flashcards, and test terminology, conditions, tests and medications.

Popular pages

Then follow the links into medicine

A knee pain page leads to the femur, tibia and menisci in 3D, to osteoarthritis, to the X-ray and MRI that show it, to knee replacement and to the painkillers used.

Symptoms 22

Start from what a person feels: the anatomy involved, common and less common causes, and when to seek urgent care.

Conditions 50

Diseases and conditions: definition, affected anatomy, causes, symptoms, diagnosis, treatment and prevention.

Medical tests 39

Blood, urine, heart and lung tests: what they measure, how they are done and how results are read.

Biomarkers 37

The substances tests measure: what each is, which organ makes or clears it, why a result may be higher or lower and what distorts it.

Imaging 8

X-ray, CT, MRI, ultrasound, PET, mammography and fluoroscopy: how each works and what it shows.

Procedures 19

Operations and procedures step by step, with the anatomy involved, recovery and risks.

Medications 41

How common medicines work in the body, what they are for and what to watch for. Education, not prescribing.

Drug classes 29

Families of medicines that share a mechanism: what they target in the body, which conditions they treat and their members.

Drug targets 24

The receptors, enzymes, channels and pathways medicines act on: what each does in the body, where it is found and which medicines change it.

Everyday and emergency knowledge

First aid 16

CPR, choking, bleeding, burns, fractures, fainting, seizures and more, aligned with resuscitation guidelines.

Health 9

Exercise, sleep, nutrition, weight, smoking, alcohol and hydration, explained through the organs they act on.

Drug Interaction Checker

Add two or more medicines, brands or combination products and see what the official sources say about each pair: severity, mechanism, management and monitoring, never a bare "safe".

Comparisons

CRP vs ESR, creatinine vs eGFR, ECG vs echocardiogram, CT vs MRI, TSH vs free T4, HbA1c vs glucose, atorvastatin vs rosuvastatin: what each is for and how they differ.

Search everything

One search across structures, organs, systems, terms and every clinical topic, with results that link straight into the 3D atlas.

Anatomy Nexus is an educational platform built on public clinical guidance and a 3D atlas whose reference body is an adult male, with the female pelvic organs and breasts modelled from the NIH Human Reference Atlas and two schematic layers for the anatomy of gender-affirming surgery (vaginoplasty and phalloplasty). It is not a diagnostic tool and does not give medical advice. In an emergency, call your local emergency number. Read the disclaimer and editorial policy.