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Questions and Answers
What is the function of chordae tendineae?
What is the function of chordae tendineae?
- Generate electrical impulses
- Pump blood into the arteries
- Connect the atria and ventricles
- Prevent valve prolapse by anchoring the valve cusps (correct)
Which arteries branch off the ascending aorta?
Which arteries branch off the ascending aorta?
- Coronary arteries (correct)
- Pulmonary arteries
- Subclavian arteries
- Carotid arteries
Which valve prevents the backflow of blood into the left ventricle?
Which valve prevents the backflow of blood into the left ventricle?
- Aortic valve
- Mitral valve (correct)
- Tricuspid valve
- Pulmonary valve
What is the thickest layer of the heart wall?
What is the thickest layer of the heart wall?
Which veins drain blood from the brain, head, and neck?
Which veins drain blood from the brain, head, and neck?
What is the primary function of capillaries?
What is the primary function of capillaries?
What prevents overfilling of the heart with blood?
What prevents overfilling of the heart with blood?
Which chamber of the heart has the thickest wall?
Which chamber of the heart has the thickest wall?
What is the function of the atrioventricular node?
What is the function of the atrioventricular node?
What type of blood vessels are the superior and inferior vena cava?
What type of blood vessels are the superior and inferior vena cava?
Which blood vessels are part of the pulmonary circuit?
Which blood vessels are part of the pulmonary circuit?
What are the two main components of the circulatory system?
What are the two main components of the circulatory system?
What is the function of the hepatic portal system?
What is the function of the hepatic portal system?
What is the function of the pericardium?
What is the function of the pericardium?
What bypasses the lungs in fetal circulation?
What bypasses the lungs in fetal circulation?
How many layers does the heart wall have?
How many layers does the heart wall have?
Which valve prevents the backflow of blood into the right ventricle?
Which valve prevents the backflow of blood into the right ventricle?
What does the right ventricle pump blood into?
What does the right ventricle pump blood into?
Which layer of the heart wall is composed of cardiac muscle?
Which layer of the heart wall is composed of cardiac muscle?
Which vessels return blood to the heart?
Which vessels return blood to the heart?
How many chambers does the heart have?
How many chambers does the heart have?
Which chamber of the heart receives oxygen-rich blood from the pulmonary veins?
Which chamber of the heart receives oxygen-rich blood from the pulmonary veins?
What is the function of the chordae tendineae?
What is the function of the chordae tendineae?
What is the function of the sinoatrial (SA) node?
What is the function of the sinoatrial (SA) node?
Which chamber of the heart receives blood from the superior and inferior vena cava?
Which chamber of the heart receives blood from the superior and inferior vena cava?
Which artery supplies blood to the heart itself?
Which artery supplies blood to the heart itself?
What prevents the backflow of blood in the heart?
What prevents the backflow of blood in the heart?
Which valve is located between the left atrium and the left ventricle?
Which valve is located between the left atrium and the left ventricle?
What is the largest artery in the systemic circuit?
What is the largest artery in the systemic circuit?
Where does the exchange of gases and nutrients occur?
Where does the exchange of gases and nutrients occur?
Which vessels carry blood away from the heart?
Which vessels carry blood away from the heart?
Which chamber of the heart pumps blood into the aorta?
Which chamber of the heart pumps blood into the aorta?
Study Notes
Cardiovascular System
- The cardiovascular system consists of the heart, blood vessels, and blood.
- It is divided into two main components: cardiovascular system and lymphatic system.
Heart Structure
- The heart is located in the thoracic cavity between the lungs.
- The heart wall has three layers: epicardium (outer layer), myocardium (middle layer composed of cardiac muscle), and endocardium (inner layer).
- The heart has four chambers: right atrium, left atrium, right ventricle, and left ventricle.
Heart Function
- The sinoatrial (SA) node sends out a stimulus causing the atria to contract.
- The atrioventricular (AV) node generates electrical impulses that signal the ventricles to contract.
- The right ventricle pumps blood into the pulmonary trunk, while the left ventricle pumps blood into the aorta.
- The tricuspid valve prevents backflow of blood into the right atrium, and the mitral valve prevents backflow of blood into the left atrium.
Blood Vessels
- Arteries carry blood away from the heart, while veins carry blood back to the heart.
- The superior and inferior vena cava are veins that return blood to the heart.
- The pulmonary arteries and veins are part of the pulmonary circuit.
- The hepatic portal system connects capillaries of the digestive organs to the liver.
- The umbilical arteries and veins carry blood to and from the placenta in fetal circulation.
Blood Circulation
- Deoxygenated blood from the body enters the right atrium through the superior and inferior vena cava.
- Oxygen-rich blood from the pulmonary veins enters the left atrium.
- The coronary arteries supply blood to the heart itself, and the coronary veins drain blood from the heart.
- The pulmonary semilunar valve prevents backflow of blood into the right ventricle.
Fetal Circulation
- The foramen ovale and ductus arteriosus bypass the lungs in fetal circulation.
- The umbilical arteries and veins carry blood to and from the placenta.
- The ductus arteriosus connects the pulmonary artery to the aorta in fetal circulation.
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Description
This quiz tests your knowledge of the circulatory system, including blood vessels, heart function, and blood flow. Topics include the role of the atria, ventricles, and blood vessels in the circulatory process.
