🧬Explore the Model
Powered by BioDigital Human. Use your mouse or finger to rotate. Click any structure to see its name, what it does, and a plain-language explanation. Use the layer controls (right side) to peel away skin, muscle, and bone.
🎯What You'll See & Try
SCD is a whole-body disease. The model lets you visit every place it leaves a mark.
📚 What you'll see
- Bone marrow — where red cells are made; in SCD they're made faster than normal because they break down faster.
- Red blood cells & hemoglobin — normal donut-shaped cells vs. stiff, sickled curves.
- Blood vessels — small ones can clog when sickled cells get stuck.
- Spleen — usually scarred and non-working by age 5; that's why infection risk is high.
- Lungs — site of acute chest syndrome (the #1 cause of SCD-related death in adults).
- Brain — silent and overt strokes; TCD ultrasound screens for risk in kids.
- Kidneys, bones, eyes — slow damage that's worth annual screening.
🧪 Try this in the model
- Find the spleen. Search "spleen" or rotate to the upper left abdomen. Note its small size — in long-standing SCD it shrinks from repeated infarcts.
- Open the layers panel and toggle skin/muscle off. See the skeleton + organs together. This is how clinicians think.
- Click a major artery. Imagine a sickled cell trying to pass through a small branch. That's what causes a pain crisis.
- Find the lungs. Acute chest syndrome lives here. Practice describing what you'd feel: pain, shortness of breath, low oxygen, fever.
- Take a screenshot of the organs that matter most for your version of SCD. Bring it to your next visit.
🩸SCD's Most-Affected Organs
Quick-reference card. Each tile names the organ, the SCD complication, and what to screen.
Bone marrow
Makes red cells faster than normal — high turnover, anemia.
Lungs
Acute chest syndrome. Watch chest pain, SOB, low O₂, fever.
Brain
Silent + overt stroke. Yearly TCD ultrasound for kids.
Heart
Pulmonary hypertension risk. Annual echo.
Spleen
Scarred / non-functional by age 5 → infection risk.
Kidneys
Concentrating defect, proteinuria. Annual urine + GFR.
Bones & joints
Pain crises, avascular necrosis (often hip).
Eyes
Sickle retinopathy. Annual ophthalmology exam.