The heart is composed of four chambers: left and right ventricles and left and right atriums (auricles).
The septum divides the right side from the left side.
The heart also contains valves which are one-way valves where the back flow of the blood is prevented.
There are four valves: 2 sigmoids, 1 tricuspid and 1 bicuspid.
The tricuspid valve is between the right atrium and the right ventricle. while the bicuspid valve is between the left atrium and left ventricle.The sigmoid valves are found inside both the pulmonary artery and aorta.
Note: all arteries except the pulmonary artery carries oxygenated blood and all veins except pulmonary vein carries deoxygenated blood.
The septum divides the right side from the left side.
The heart also contains valves which are one-way valves where the back flow of the blood is prevented.
There are four valves: 2 sigmoids, 1 tricuspid and 1 bicuspid.
The tricuspid valve is between the right atrium and the right ventricle. while the bicuspid valve is between the left atrium and left ventricle.The sigmoid valves are found inside both the pulmonary artery and aorta.
Note: all arteries except the pulmonary artery carries oxygenated blood and all veins except pulmonary vein carries deoxygenated blood.
Questions:
- What is the special feature of the valves?
- In the heart, all the arteries carries oxygenated blood except?
- Locate the places of the valves in the heart.
References:
Yaghi, M. (2000). Life and earth sciences. Sin-El-Fil, Lebanon: Center for educational research and development.
Healthy Heart Cross-Section. Retrieved July 5, 2011, from http://www.nhlbi.nih.gov/health/dci/Diseases/hvd/hvd_whatis.html.
