This is Papua, New Guinea.

The green line goes down. That's the wild nature portion.

I'll just go out in the field and collect these wonderful animals

So here's two sort of canonical neurons from a vertebrate and an invertebrate, a human pyramidal neuron from Ramon y Cajal, and another cell to the right, a non spiking interneuron, and this is the work of Alan Watson and Malcolm Burrows many years ago, and Malcolm Burrows came up with a pretty interesting idea based on the fact that this neuron from a locust does not fire action potentials.

All vertebrate embryos are inherently female, anyway.

W wait, old spinal called based organisms.

And so, the year 2000, you see there.

Young icefish hide in small ice holes to avoid predators, while a variety of invertebrates,

Livers and internal organs take a bit longer.

Now flight is an inherently difficult thing.

That's a little diver up there in the corner.

From a posterior view again assess for asymmetry, atrophy, or skin changes.

It's called encephalomyelitis.

Here's another case that I think is interesting.

Arms amp hands are developing 36 Days

These operations you talked about, were they brain operations?

They can fix the spine, if you got the money.

Another thing that is interesting is that the brain stem that we have is shared with a variety of other species.

If you don't kill the fish, they take a longer time to die, they grow larger and they reproduce a lot.

But the only way I can describe what I was seeing that day was that this octopus was playing, which is a pretty sophisticated behavior for a mere invertebrate.

I actually understood the mechanics of vertebrae enough to kind of start to imitate them.

And the aquarium had a lot of big fish tanks but not a lot of invertebrate displays, and being the spineless guy, I thought, well

They said to my parents, the neck break was a stable fracture, but the back was completely crushed.

This is the last act on this Earth of a little girl called Heidi, five years old, before she died of cancer to the spine.

What I call the human portion humans and their livestock and pets versus the natural portion all the other wild animals and just these are vertebrates and all the birds, etc., in the land and air, not in the water.

I just noticed that as I finished this skull, the armature wire that I had been used to holding it up was sticking out of the back just where a spine would be.

They start as little eggs, and they're in The Guinness World Book of Records again for having the most number of eggs of any vertebrate on the planet.

Or they lay eggs, or they don't lay eggs.

The stork test evaluates for a stress fracture of the pars interarticularis in the lumbar spine.

They die of HlV, they die of hepatitis C, they die of infections of their heart valves, they die of infections of their brains, of their spines, of their hearts, of their bloodstream.

I have a bulging disk.

Palpate anatomic landmarks for tenderness.

But by now, everybody agrees that the elephant had an aquatic ancestor.

Ten thousand years ago, at the dawn of agriculture, human population, plus livestock and pets, was approximately a tenth of one percent of the terrestrial vertebrate landmass.

A lot of wild animals died for lack of food.

A lot of wild animals died because there wasn't any food.

And a man who fancies himself a god feels a very human chill crawl up his spine.

I had an illness as a child and I had an infection, which turned into a fever which turned into inflammation of my brain and spinal cord.

As we move past the relatively gigantic mammals, birds, frogs and plants to the more elusive insects and other small invertebrates and then beyond to the countless millions of organisms in the invisible living world enveloped and living within humanity?

If you wrongly move a hurt person and damage the spine, they can become paralyzed completely.

C2 cervical vertebrae is connected to the

He's not an animal. Come on.

An animal? An animal?

And so button by button, vertebrae by vertebrae, I built my way down.

The C1 cervical vertebrae is connected to the C2 cervical vertebrae.