The heart Flashcards
Describe how deoxygenated blood moves through the heart.
Deoxygenated blood enters the right atrium via the vena cava.
The right atrium contracts and pushes it into the right ventricle.
The right ventricle contracts and pushes it to the lungs to be oxygenated.
Where would you find pacemaker cells in the heart and what do they do?
Pacemaker cells are found in the wall of the right atrium and regulate heart rate by sending electrical impulses to the heart muscles.
Explain why the walls of the left ventricle are thicker than the walls of the right ventricle.
The left ventricle transports blood all around the body whereas the right ventricle only transports blood to the lungs.
The left ventricle needs more muscle to generate a higher blood pressure to push the blood further.
