⚖️01
Homeostasis & Feedback
Throw the body off balance and watch a negative feedback loop pull it home.
Open →🔬02
Levels of Organization
Zoom from a single atom out to a whole human, one nested level at a time.
Open →🫁03
The 11 Organ Systems
Tap a system and watch its organs light up on the body.
Open →🧭04
Directional Terms
Superior, medial, proximal, deep — each pair drawn on a body.
Open →✂️05
Body Planes & Sections
Sagittal, frontal, and transverse planes sweeping through.
Open →🫀06
Cavities & Regions
The body cavities and membranes, plus the 9 regions & 4 quadrants.
Open →