Welcome to our class blog!

We are a class of year 7 and 8 students who attend a semi-rural school on the outskirts of Tauranga in NZ. We are excited to share our experiences and learning at Tauriko School. Check back regularly to see what we have been up to. We have a load of fun in our class and would love to share it with you!

Monday, 7 April 2014

Did you know...

that an octopus has three hearts?!


   An octopus has one main heart called the systemic heart and two smaller ones that are located near the its gills. These two smaller hearts function much like the right side of the human heart. They pump oxygen-depleted blood to the gills, where it exchanges carbon dioxide for oxygen, and then pump this refreshed blood to the systemic heart. The systemic heart then propels this new blood throughout the octopus's body, just like the left side of the human heart! The major difference between a human and an octopus's circulatory systems (other than the number of hearts) is that unlike the red blood of men and women, octopuses have blood that is blue! That is because their blood contains a copper-rich protein called hemocyanin instead of the reddish hemoglobin found in humans!
Source: A Moment of Science

Do you have any interesting facts to share?

2 comments:

  1. I like the Octopus because it looks a cat except with 8 arms

    ReplyDelete