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Cardiovascular System Anatomy: Atria

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Questions and Answers

What is the main function of the atria in the heart based on the text?

To collect blood draining from the myocardium

To push blood upstairs into the ventricles

To contribute significantly to the propulsive pumping activity of the heart

To receive blood returning from the circulation (correct)

Which veins return blood to the right atrium of the heart?

Inferior vena cava and coronary sinus

Pulmonary veins

Superior vena cava and inferior vena cava (correct)

Superior vena cava and coronary sinus

Where does most of the heart's base lie?

In the right atrium

In the left atrium

In the left ventricle (correct)

In the right ventricle

What structures project into the ventricular cavity and play a role in valve function?

Irregular ridges of muscle called trabeculae carneae Signup and view all the answers

Which chamber of the heart forms most of its anterior surface?

Right ventricle Signup and view all the answers

Why are the atria described as relatively small, thin-walled chambers?

Because they don't need to contract much to push blood into the ventricles Signup and view all the answers

What is the main function of the atria in the heart?

To receive blood returning from the circulation Signup and view all the answers

Why are the atria described as relatively small, thin-walled chambers?

To contract minimally to push blood into the ventricles Signup and view all the answers

Where does most of the heart's base lie?

Comprising the left atrium Signup and view all the answers

Cardiovascular System Anatomy: Atria

Choose a study mode

Podcast

Questions and Answers

What is the main function of the atria in the heart based on the text?

Which veins return blood to the right atrium of the heart?

Where does most of the heart's base lie?

What structures project into the ventricular cavity and play a role in valve function?

Which chamber of the heart forms most of its anterior surface?

Why are the atria described as relatively small, thin-walled chambers?

What is the main function of the atria in the heart?

Why are the atria described as relatively small, thin-walled chambers?

Where does most of the heart's base lie?

Which veins return blood from body areas superior to the diaphragm to the right atrium?

What structures mark the internal walls of the ventricular chambers?

Which chambers make up most of the volume of the heart?

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