Backbones

Spine- crack crack crack

Spina bifida

Spinal cord- ouch!

And THIS IS SPINAL TAP!!

Dendritic spine;

A specialized post-synaptic protrusion in dendrites implicated in learning and memory through synaptic plasticity.

Send a chill up my...spine!

Spine- crunch crunch crunch

Spinal canal;

A tube shaped space enclosed in an protected by the bony vertebral column

Spinebill bird (Acanthorhynchus), from Australia, drinks honey.

The function f(x) has a spinode at X₀

Spine- snap snap snap