Bones!

Hey guys.

So today we're gonna take a look at a standard

that has to do with bones.

And since we've really just kind of started talking about

bones should be pretty interesting.

Plus I found some experiments that go really good with

this, which I think you'll find really interesting.

All right.

So we're gonna start down here where the baby is.

All right.

So here we go.

So the first thing I want to talk about is

the standard that we're going to cover.

So the big umbrella standard is understand human body systems

and how they are essential for life means important for

life protection, movement and support.

And kind of the sub topic that we're kind of

going to touch on.

Today's compare the different functions of the skeletal and muscular

system. All right, let's go to the first off.

Let's start with what our bones and how many do

you have?

Okay, So every single person has a skeleton made up

of many bones.

These bones give your body structure let you move in

many ways protect your internal organs and more So it's

time to look at all your bones.

The adult human body has 206 of them.

Really going to focus on the spine today.

And you know how bones are made and things like

that. But here's an interesting fact.

You may not have known when you're born, you actually

have over 300 bones.

But as you get older, your bones fuse are joined

together. And that is why you have less of them

as you're older than when you're born.

All right, So they end up here.

So how are bones in my back connect?

And I wanted to focus on the spine because it's

pretty much the most um yeah, influenced not influential but

important bone that you have all your bones have a

very specific job.

But the spine is the one that allows you the

movement that your body has.

So it says one series of bones that runs the

entire length of the neck and back has unique design

that allows us to move in all sorts of ways.

It's called the spine.

And its main job is to support the body.

If you run your fingers down your bags let's see

you bend over and you can feel those bones in

your back you'll feel the protruding bones.

That just means the bones that stick out that make

up your spine.

Also known as your backbone.

The spine is made up of 36 interlocking which means

they join together bones called vertebrae, pronounced vertebrae.

You can think of vertebrae like beads on a string

able to bend, twist and turn.

If our spines are made of one long continuous bone

we wouldn't be able to bend over.

So this is what makes our spine one of the

most important things that allows us to do things like

bend and you know move and walk and run and

do all that kind of stuff that we're allowed to

do. So there's a fun experiment that I found and

basically this is real easy.

Um You'll just need one pipe cleaner in two straws.

You need to take one of those straws and cut

it up into smaller pieces.

Not like tiny pieces but like um maybe half an

inch long pieces.

And uh watch the experiment and I'll show you exactly

what to do with them.

But it's pretty cool.

All right.

So now we're gonna go into the E.

So how are bones made?

This is really important.

So special cells start making new bone by building a

structure of protein blood them brings in calcium which sticks

to the structure.

When the calcium hardens the new bone is complete, the

bone can also rebuild the, sorry, the body can also

rebuild bone that wears away or breaks.

And this is really important.

This is why you always hear, you need to drink

milk. You need to have more calcium.

Calcium make stronger bones.

So this is um like calcium is so important and

that also heads into our next slide.

So what happens when the calcium is taken away from

the bone?

Okay, so I didn't experiment and you'll be able to

click on and see it below.

It's not one that you're going to be able to

do without like your parents help or something along those

lines because it's uh it takes quite a few days.

In this case I think I took about 55 or

six days.

Um But what it involves the chicken bone and some

vinegar and the vinegar is very acidic and it kind

of eats away that that calcium and that chicken bone.

And you kind of get to see a little bit

of what happens now in looking back at the experiment

is probably going to be best if it goes a

little bit longer than that time, but we still got

to see some effects from it.

So I really hope you enjoy that experiment.

Mhm. All right.

And then finally, your exit ticket out of here, guys,

what did you learn about bones that you may not

have already known?

So go ahead and write that down on a piece

of paper and give me at least one thing that

you may not have known about bones before you started

listening to this or looked at some of these experiments.

And uh I hope you enjoyed it.

All right guys.

Bones!

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