🖐️01
Sensory Receptors
The skin's touch, pressure, temperature, and pain endings.
Open →👁️02
The Eye
Cornea, iris, lens, retina, fovea — a cross-section you can tap.
Open →🌈03
The Visual Pathway
From rods and cones, through the optic chiasm, to the visual cortex.
Open →👂04
The Ear
Outer, middle, inner — from the auricle to the spiral cochlea.
Open →👅05
Taste & Smell
The five basic tastes and the olfactory pathway for smell.
Open →🦵06
The Reflex Arc
Tap the tendon and follow the knee-jerk through its five parts.
Open →