The function of the heart:
In today’s lesson, we had a junior doctor visiting us and she shared fantastic facts with the class about the circulatory system. The exciting part of the lesson was when she dissected the heart under the visualiser.
This is what we learnt:
The deoxygenated blood enters the heart through the Supervisor vena cava and travels to the right atrium, then to the right ventricle. This deoxygenated blood travels to the lungs and receives oxygen. Then the oxygenated blood enters the heart through the pulmonary vein then the left atrium, then to the left ventricle, this is then pumped out through the aorta and the rest of the body.
Some fun facts we learnt today were:
- Pulmonary artery is the only artery that carries deoxygenated blood.
- The difference between the right and left ventricle is: the muscles around the left ventricle is thicker because it has to work harder to pump blood all around the body.
- Blood only flows in one direction.
- The heart makes a lub dub sound which is your valves opening and closing.