Skip to content
One Long Tail
Lessons
Hands-on
Plans
About us
Menu
Lessons
all 428, by branch
Hands-on
lessons you can touch
Plans
what we're building
About us
who we are, contact
All biology lessons
Biology
Lesson 40 of 113
Cajal and the neuron doctrine
Is the brain one continuous network, or separate cells?
350 BC
today
Era 4 of 11:
The machine of life — physiology, nerves and development
, 1850 – 1980
Check yourself
Loading exercises…