Biology - how our body works

 Hello people today I will be blogging about this week's dissecting project.  

We have dissected a sheep heart, since the sheep's heart is kinda similar to human hearts that is why our teacher decided to use a sheep heart instead. 

At first it looked kinda disgusting and it smelled really bad but once you got into it, started dissecting it it's not that bad. However for the first few cuts on the sides of the heart smelled real bad. But after me and a friend of mine cut the first side we saw the right side of the heart and then saw the inside of it. The first side we cut was the right side and that side was the thick and the left side was thin. when we started cutting the left side we saw where the veins connected and go through. 

 It was kinda exciting cutting and seeing inside heart for the first time. I actually thought that I will see a lot of blood from inside coming out while cutting it but luckily it didn't.  

I will be showing you a picture of the heart while it was still fine and not cutted. However if you don't want to see it you can just skip it.

 That is a picture of me holding the heart while it was still in shape.  On the top you can see the Arteries, the veins and the Artriums. 

The heart needs oxygen to pump and function well and to keep the pump going. After it gets oxygen from your mouth or nose it removes/exhale carbon dioxide. 

The Artriums is where the blood goes into the heart to each side from the veins and that's where Arteries goes in to this topic. Arteries is where it takes blood away from the heart to spread it all around the body and then once that happens the veins also bring back the blood to the heart from the body and do that process again and again.

The other parts of the heart inside are the: 

                                               -Valves

-Heart string                                               

-Septum

-Ventricles

- Muscled walls

These have their own job to do to make sure the heart function well.

The Valves are a one way gates. It stops the blood from going backwards.

Heart string holds the valves in place.

Septum separates the left and the right side of the heart.

Ventricles is a V shaped cavities which push the blood into arteries to take away from the heart.

Muscle walls is strong enough to help squeeze and push blood around the body. 

 

After we cutted all the sides we have cutted through the heart into a half then that when we saw all those things I have said above. 

This is a picture of an inside heart that is more clear.

There are still a lot more I can tell you but that will be all for today's blog. Thank you for reading.