Crimson, scarlet, burgundy, cherry… blood flows through our bodies in all its vibrant shades of red. Let’s explore our circulation system! How surgeons, don’t be squeamish as we dissect an animal heart and examine the veins, arteries and chambers up close. They all work hard to move blood around our bodies.
William Harvey was fascinated with anatomy and made ground-breaking discoveries about valves. I wonder what we might uncover. Let’s check out the most common blood groups in our class? What do people give blood?
Find out how to keep your heart happy with cardiovascular exercise and healthy food. Kick-start a campaign to spread the word about the damage caused by smoking to the lungs and heart. Hearts pound, flutter and maybe skip a beat… What makes your heart race? Is it a secret? Cross my heart, I won’t tell!
We created our very own replicas of a chamber that we have in our hearts to help us to learn more about how they work.
The jar represented the actual chamber.
The blocked straw represented a vein, as we learnt that veins only allow blood flow one way.
The open straw represented the artery, when we pressed down on our model we could see how blood would flow through this vessel.
The water represented blood.
The balloon represented the valve that opens and closes with each heart beat.
Our scientific vocabulary from this work was exceptional!
We learnt about all of the components that make up the blood, we then created our own replica pint of blood to help us visualise how this would look.
-cheerios for red blood cells: they were the biggest of our items and a similar disc shape.
-mini-white marshmallows for white-blood cells.
-yellow food colouring and water for plasma.
-oats for platelets.
Take a look!
Our learning moved on to understanding how we can keep our bodies healthy. Part of that was understanding and measuring our BPM, we did this at rest (with stopwatches for accuracy!) then we did this after different bouts of exercise.
This helped us to see that exercise made our BPM increase. We looked into why this happens, what our bodies need more of during exercise and explored why this was.
We then compared how different types of exercise affected us differently and used Microsoft Excel to analyse our results...
We used our knowledge of the structure of the heart to then begin building our own sculptures! For this we used wire and pliers around a round mould. We focused on including parts like the arteries and veins and tried to make one side larger, just like we had learnt. It was very tricky to manipulate the wires into the positions and angles that we needed, but with our gloves, we persevered!
Take a look at our hard work and how they turned out!