46 Questions
Which of the following best describes the cardiovascular system?
A network of roads and vehicles for blood
Where is the heart located in the body?
In the mediastinum, between the lungs
Which side of the heart receives blood that's rich in oxygen?
The left side
Which layer of the heart is responsible for pumping blood to the rest of the body?
Myocardium
What is the function of the atria in the heart?
To receive blood from the body and lungs
Which chamber of the heart has the thickest wall muscle?
Left ventricle
What is the function of the cardiac valves in the heart?
To control the flow of blood
During the newborn's first breath, what happens to the foramen ovale and ductus arteriosus?
They close
Why is it important for the blood to no longer bypass the lungs after the newborn's first breath?
To ensure proper oxygenation of the newborn's blood
What would happen if too much blood were to flow through the fetal lungs?
The lungs would be overwhelmed
Which of the following is NOT a function of the heart's skeleton?
Preventing electrical signals from crossing between the atria and ventricles
What is the purpose of the nerves that connect to the heart?
To control the beating rate of the heart
What happens during systole?
The heart muscles contract
Which of the following is true about veins?
Veins have one-way valves that ensure blood flows in the correct direction
Which of the following is true about pulse?
Pulse can vary in terms of regularity and strength
What is the main purpose of an electrocardiography (ECG or EKG)?
To record the electrical activity of the heart
How does the fetus receive oxygen supply?
From the umbilical vein connected to the placenta
Which of the following is true about the 'Dub' sound of the heart?
It occurs when the ventricles contract
What is ventricular systole?
The phase when the ventricles contract
What is valvular insufficiency?
When the heart valves don't close properly
How is cardiac output (CO) calculated?
CO = SV × HR
Which of the following best describes the function of the cardiovascular system?
Transporting oxygen and nutrients to the body's cells
What is the purpose of the veins in the cardiovascular system?
To carry deoxygenated blood back to the heart
Where is the heart located in the body?
In the thoracic cavity
Which chamber of the heart receives blood that is rich in oxygen?
Left atrium
What is the main function of the aorta in the heart?
To carry blood away from the heart
What is the function of the atria in the heart?
To receive blood from the body and lungs
Which side of the heart receives blood that's rich in oxygen?
Left side
What is the purpose of the cardiac valves in the heart?
To prevent backflow of blood
Which of the following is true about the function of capillaries in the cardiovascular system?
Capillaries exchange important substances like oxygen and nutrients.
What is the main function of arteries in the cardiovascular system?
Arteries carry blood away from the heart to different parts of the body.
What determines the cardiac output (CO) in the cardiovascular system?
Stroke Volume (SV) and Heart Rate (HR)
What is the function of veins in the cardiovascular system?
Veins carry deoxygenated blood towards the heart
What is the purpose of the SA (Sinoatrial) node in the cardiovascular system?
To control the heart rate and act as a natural pacemaker.
Which of the following is true about the blood supply to the fetus?
The fetus receives its oxygen supply from the mother's blood.
What is the purpose of the foramen ovale and ductus arteriosus in a baby's heart before birth?
To bypass the lungs and allow blood to flow directly to the body.
What is the function of the P wave in an electrocardiogram (ECG or EKG)?
It represents the electrical activity when the atria contract.
What is the purpose of repolarization in the heart's rhythm?
To reset the heart's electrical activity for the next heartbeat.
Which of the following is true about the function of the cardiac valves in the heart?
The valves help regulate blood flow by opening and closing in response to pressure changes
What is the primary function of the skeleton of the heart?
Supporting the heart's muscle (myocardium)
What is the purpose of the nerves that connect to the heart?
To make the heart beat faster during exercise and slower during rest
Which of the following is true about the cardiac conduction system?
It is a network of special cells that send electrical signals to make the heart beat in a coordinated way
What happens during diastole in the cardiac cycle?
The atria and ventricles relax
What happens when the newborn takes its first breath and inflates the lungs?
The foramen ovale and ductus arteriosus close
What would happen if too much blood were to flow through the fetal lungs?
The lungs would become damaged
What happens to the mother and baby's blood after the closure of the foramen ovale and ductus arteriosus?
The mother and baby's blood no longer mix/meet
Test your knowledge on the cardiovascular system and heart anatomy with questions about the location and function of the heart, circulation of oxygen-rich blood, heart chambers, and layers responsible for pumping blood to the body.
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