/reference/anatomy
Spin, zoom, and inspect each system. Built on free, professionally-derived 3D models (CC-licensed) — no AI-generated geometry. Rendered in your browser via Three.js.
60 systems live · 0 in ingest pipeline
All 5 labeled systems in one canvas with focus presets (heart, brain, airway, spine, cardiopulmonary, whole-body) + per-system toggles. Best entry point when you're studying relationships across systems.
Chambers, valves, conduction structures, papillary muscles, coronary arteries — 83 anatomical sub-parts. Hover any structure for its anatomical name; click to pin.
BodyParts3D — Database Center for Life Science (Japan) · CC BY 4.0
59 anatomical sub-parts — cerebrum, basal ganglia, brainstem/midbrain, cerebellum, ventricles, limbic, white-matter tracts. Hover for the name; click to pin.
BodyParts3D — Database Center for Life Science (Japan) · CC BY 4.0
280 sub-parts — R upper/middle/lower + L upper/lingula/lower with segmental bronchi, pulmonary artery/vein, pleura. Hover for the name; click to pin. Useful for one-lung ventilation, lobectomy planning.
BodyParts3D — Database Center for Life Science (Japan) · CC BY 4.0
95 sub-parts — trachea, carina, R/L main bronchi, lobar + segmental bronchi. Hover for the name; click to pin. Double-lumen tube positioning + mainstem orientation. Note: BodyParts3D source does not include the larynx — laryngeal anatomy is in the 2D image library.
BodyParts3D — Database Center for Life Science (Japan) · CC BY 4.0
48 sub-parts — C1–C7, T1–T12, L1–L5, sacrum, coccyx, intervertebral discs. Hover for the level; click to pin. Neuraxial landmark practice, spine fusion mental rehearsal.
BodyParts3D — Database Center for Life Science (Japan) · CC BY 4.0
Right + left kidneys. Use for nephrectomy planning, transplant orientation, retroperitoneal anatomy review.
BodyParts3D — Database Center for Life Science (Japan) · CC BY 4.0
Liver with all lobes + sectors preserved as separate meshes. Use for transplant, Whipple, hepatectomy planning, biliary anatomy review.
BodyParts3D — Database Center for Life Science (Japan) · CC BY 4.0
Stomach silhouette. Use for sleeve gastrectomy, RYGB, fundoplication mental rehearsal.
BodyParts3D — Database Center for Life Science (Japan) · CC BY 4.0
Aorta with all branches — clinical orientation for cross-clamp, EVAR, dissection.
BodyParts3D — Database Center for Life Science (Japan) · CC BY 4.0
Ascending aorta — aortic root, AVR, Bentall reference.
BodyParts3D — Database Center for Life Science (Japan) · CC BY 4.0
Aortic arch with brachiocephalic trunks.
BodyParts3D — Database Center for Life Science (Japan) · CC BY 4.0
Right + left coronary trunks and major branches — CABG planning, ischemia mapping.
BodyParts3D — Database Center for Life Science (Japan) · CC BY 4.0
Common + internal carotid arteries — CEA, central line landmarks.
BodyParts3D — Database Center for Life Science (Japan) · CC BY 4.0
Portal venous tree — liver transplant, Whipple, portal HTN.
BodyParts3D — Database Center for Life Science (Japan) · CC BY 4.0
Superior + inferior mesenteric arteries — bowel ischemia, AAA branch reimplant.
BodyParts3D — Database Center for Life Science (Japan) · CC BY 4.0
Renal arteries — nephrectomy, transplant, EVAR landmarks.
BodyParts3D — Database Center for Life Science (Japan) · CC BY 4.0
Common iliac arteries — distal AAA, fem-pop bypass landmarks.
BodyParts3D — Database Center for Life Science (Japan) · CC BY 4.0
IVC — CVC placement, retroperitoneal anatomy.
BodyParts3D — Database Center for Life Science (Japan) · CC BY 4.0
SVC — central line tip placement, mediastinal anatomy.
BodyParts3D — Database Center for Life Science (Japan) · CC BY 4.0
Gallbladder + cystic + common hepatic + R/L hepatic ducts. Whipple, lap chole reference.
BodyParts3D — Database Center for Life Science (Japan) · CC BY 4.0
Bony pelvis — neuraxial landmarks, OB anatomy, hip surgery orientation.
BodyParts3D — Database Center for Life Science (Japan) · CC BY 4.0
Trachea isolated for airway focus — DLT positioning, mainstem orientation.
BodyParts3D — Database Center for Life Science (Japan) · CC BY 4.0
Mandible — airway management, AFOI orientation, ENT surgery.
BodyParts3D — Database Center for Life Science (Japan) · CC BY 4.0
Tongue — airway obstruction, oral intubation orientation.
BodyParts3D — Database Center for Life Science (Japan) · CC BY 4.0
Roots, trunks, divisions, cords, and terminal branches (C5–T1) — anatomy underlying interscalene, supraclavicular, infraclavicular, and axillary blocks. 109 sub-meshes preserved.
Z-Anatomy · CC BY-SA 4.0
Femoral, obturator, lateral femoral cutaneous, iliohypogastric, ilioinguinal, and genitofemoral nerves — anatomy for psoas-compartment, fascia-iliaca, and femoral nerve blocks.
Z-Anatomy · CC BY-SA 4.0
Superficial and deep cervical plexus branches — anatomy for superficial cervical plexus block (CEA) and ansa cervicalis identification.
Z-Anatomy · CC BY-SA 4.0
Sciatic, pudendal, superior and inferior gluteal nerves with peroneal/tibial division — anatomy for sciatic, popliteal, and pudendal blocks.
Z-Anatomy · CC BY-SA 4.0
All twelve cranial nerves with branching patterns — anatomy for awake fiberoptic, transsphenoidal, and CN palsy assessment. Includes CN V trigeminal divisions, CN VII facial course, CN X vagus with RLN/SLN.
Z-Anatomy · CC BY-SA 4.0
Cervical, thoracic, and lumbar disc anatomy — relevant for neuraxial level identification (Tuffier's line, vertebra prominens) and disc-related case context.
Z-Anatomy · CC BY-SA 4.0
Spinal cord with anterior, lateral, and posterior horn architecture — anatomy for neuraxial blocks, dermatome interpretation, and trauma cases.
Z-Anatomy · CC BY-SA 4.0
Trigeminal nerve with V1 ophthalmic, V2 maxillary, V3 mandibular divisions — anatomy for facial blocks, awake fiberoptic intubation topicalization, and trigeminal neuralgia.
Z-Anatomy · CC BY-SA 4.0
Facial nerve with intracranial, intrapetrous, and extracranial course — anatomy for parotid surgery, facial nerve sparing, Bell's palsy assessment.
Z-Anatomy · CC BY-SA 4.0
Glossopharyngeal nerve — anatomy for awake fiberoptic intubation (gag reflex, posterior tongue topicalization) and carotid sinus reflex.
Z-Anatomy · CC BY-SA 4.0
Vagus nerve including thoracic and abdominal course — parent of the recurrent laryngeal nerve. Anatomy for laryngeal injury, vagal tone, gastric/cardiac autonomics.
Z-Anatomy · CC BY-SA 4.0
Hypoglossal nerve — tongue motor innervation. Anatomy for tongue injury, mandibular surgery, OSA-related airway considerations.
Z-Anatomy · CC BY-SA 4.0
Spinal dura mater — the meningeal layer relevant to neuraxial anesthesia. Helps visualize loss-of-resistance landmarks and accidental dural puncture geometry.
Z-Anatomy · CC BY-SA 4.0
Full larynx with thyroid cartilage, cricoid, arytenoids, vocal folds, ary-epiglottic folds — anatomy for awake fiberoptic intubation, cricothyrotomy landmarking, RLN/SLN injury patterns.
Z-Anatomy · CC BY-SA 4.0
Diaphragm anatomy including crura, openings (aortic hiatus T12, esophageal T10, caval T8), and central tendon — relevant to phrenic-nerve blocks, post-thoracic-surgery dysfunction, hiatal hernia.
Z-Anatomy · CC BY-SA 4.0
Trachea with bifurcation at carina (~T4-T5) and main bronchi — anatomy for ETT depth, double-lumen tube positioning, mainstem intubation, lung isolation for thoracic surgery.
Z-Anatomy · CC BY-SA 4.0
Pituitary with adeno- and neuro-hypophysis — relevant for transsphenoidal surgery, perioperative endocrine considerations (DI, SIADH, panhypopit), corticosteroid stress dosing.
Z-Anatomy · CC BY-SA 4.0
Thyroid lobes and isthmus — anatomy for thyroidectomy, awake fiberoptic landmarks, recognition of large goiter as airway-difficulty predictor.
Z-Anatomy · CC BY-SA 4.0
Globe with extraocular muscles, lens, retina, and orbital structures — anatomy for retrobulbar / peribulbar / sub-Tenon's blocks, ophthalmic surgery, oculocardiac reflex.
Z-Anatomy · CC BY-SA 4.0
Skull base with sphenoid, ethmoid, occipital, and petrous components — anatomy for transsphenoidal surgery, cribriform plate (CSF leak risk), foramina identification.
Z-Anatomy · CC BY-SA 4.0
Hip joint with femoral head, acetabulum, and stabilizing ligaments — anatomy for total hip arthroplasty, fascia iliaca block, hip fracture surgical positioning.
Z-Anatomy · CC BY-SA 4.0
Knee joint with cruciate ligaments, menisci, patella, and femoral condyles — anatomy for total knee arthroplasty, adductor canal block coverage, ACL/meniscus surgery.
Z-Anatomy · CC BY-SA 4.0
Ankle joint with talus, calcaneus, deltoid and lateral ligaments — anatomy for ankle blocks (5-nerve), foot/ankle surgery.
Z-Anatomy · CC BY-SA 4.0
Mediastinum with thymus, great vessels, and central thoracic structures — anatomy for sternotomy, mediastinal mass evaluation, central line landmarks.
Z-Anatomy · CC BY-SA 4.0
Stellate ganglion with sympathetic trunk — anatomy for stellate ganglion block (CRPS, refractory VT, vasospasm). Adjacent to vertebral artery (key risk).
Z-Anatomy · CC BY-SA 4.0
Sacrum, ilium, ischium, pubis with iliac crest landmarks — anatomy for OB/cesarean positioning, hip surgery, sacral hiatus identification (caudal block).
Z-Anatomy · CC BY-SA 4.0
Nasal septum, conchae/turbinates, ethmoidal and maxillary sinuses — anatomy for nasotracheal intubation, awake fiberoptic, FESS, transsphenoidal corridor.
Z-Anatomy · CC BY-SA 4.0
Glenohumeral joint with rotator cuff (supraspinatus, infraspinatus, subscapularis, teres minor) — anatomy for shoulder surgery, interscalene block target zone.
Z-Anatomy · CC BY-SA 4.0
TMJ with mandibular fossa and articular disc — anatomy for airway assessment (mouth opening), TMJ surgery, dental procedures.
Z-Anatomy · CC BY-SA 4.0
Spleen with splenic vasculature — anatomy for splenectomy (post-trauma), portal hypertension considerations.
Z-Anatomy · CC BY-SA 4.0
Pancreas with head, body, tail — anatomy for Whipple, distal pancreatectomy, ERCP-related cases.
Z-Anatomy · CC BY-SA 4.0
Rectus abdominis muscle with anterior + posterior rectus sheath — anatomy for rectus sheath block (umbilical hernia, midline laparotomy analgesia), TAP block context.
Z-Anatomy · CC BY-SA 4.0
Cervical spine C1–C7 with atlas, axis, and the C7 vertebra prominens — anatomy for neuraxial level identification, neck positioning under anesthesia, and cervical block landmarks.
Z-Anatomy · CC BY-SA 4.0
Femur with head, neck, greater/lesser trochanter, shaft, and condyles — bony landmark reference for femoral nerve block, fascia iliaca block, and hip/knee surgery positioning.
Z-Anatomy · CC BY-SA 4.0
Humerus with head, surgical neck, deltoid tuberosity, and distal condyles — bony reference for interscalene/supraclavicular block anatomy and shoulder/elbow surgery positioning.
Z-Anatomy · CC BY-SA 4.0
Temporal bone with squamous, petrous, mastoid, and tympanic parts — anatomy for ENT/mastoid surgery, middle-ear cases, and skull-base orientation (facial nerve canal, internal acoustic meatus).
Z-Anatomy · CC BY-SA 4.0
Models sourced from BodyParts3D / Anatomography (CC BY-SA 2.1) + Z-Anatomy (CC BY-SA 4.0) + NIH 3D Print Exchange + University of Dundee Sketchfab collection (CC BY-SA 4.0). Full per-model attribution at /attribution.