PBS 4.1 "Heart Structure" Study Guide
It is expected that students will:
- Identify the main structures of the heart and describe their functions. - Outline the path of the major blood vessels to and from the heart. - Recognize that heart valves function to keep blood moving in the proper direction.
It is expected that students will:
- Recognize that arteries move blood away from the heart and veins carry blood back to the heart. - Compare the structure and function of arteries and veins.
The human heart is a...
...four-chambered muscular pump designed to provide the force needed to transport blood through all the tissues of the body.
The structure of blood vessels relates to...
...their overall function.
The heart's pulmonary circuit pumps blood...
...to the lungs to pick up oxygen, while the systemic circuit pumps oxygenated blood out to the tissues of the body.
What is the pathway that blood takes as it passes through the heart?
1) Inferior/Superior Vena Cava 2) Right atrium 3) Tricuspid valve 4) Right ventricle 5) Pulmonary valve 6) Pulmonary artery 7) Lungs 8) Pulmonary veins 9) Left Atrium 10) Mitral valve 11) Left ventricle 12) Aortic valve 13) Aorta 14) Capillaries
How does the structure of the arteries and veins relate to their functions?
Arteries have a much thick wall because they have to distribute oxygenated blood throughout the body. Veins have a thinner wall as they carry the deoxygenated blood back to the heart.
The human heart is a four-chambered muscular pump is designed to?
Provide the force needed to transport blood through all tissues of the body.
What are the structures that make up the human heart and how they are organized?
The four chambers: right atrium, right ventricle, left atrium, and left ventricle.
How do the heart and lungs work together to pick up and deliver oxygen to the cells?
The heart pumps deoxygenated blood to the lungs to receive oxygen. Oxygen-rich blood is then carried back to the lungs. The blood is then pumped out of the heart and to the body cells.
Difference between pulmonary circuit and systemic circulation?
The pulmonary circuit pumps blood to the lungs in order to pick up oxygen. The systemic system pumps oxygenated blood out to the body tissues.
What is the function of the valves in the heart?
To keep blood from flowing backwards in the heart.