Podcast
Questions and Answers
The chordate tendinae prevent regurgitation from (select one)
The chordate tendinae prevent regurgitation from (select one)
- The atria into the vena cavae
- The ventricles into the atria (correct)
- The pulmonary artery and aorta into the ventricles
- The atria into the ventricles
The atria (select one):
The atria (select one):
- Have fewer layers in their walls then the ventricles
- Do not require muscle in their walls
- Have thinner walls than the ventricles (correct)
- Contract sequentially, with the left following the right
How is the heart muscle supplied with oxygen and nutrients? (Select one):
How is the heart muscle supplied with oxygen and nutrients? (Select one):
- From the blood that circulates through the heart chambers
- By the coronary arteries, which branch from the aorta (correct)
- By the pulmonary arteries, which also supply the lungs
- From the cardiac arteries, which are more extensive on the left side of the heart than the right
How is blood drained from the tissues of the heart? (Select one)
How is blood drained from the tissues of the heart? (Select one)
What proportion of the cardiac output does the heart itself receive? (Select one)
What proportion of the cardiac output does the heart itself receive? (Select one)
Which chamber of the heart has the largest blood supply? (Select one)
Which chamber of the heart has the largest blood supply? (Select one)
Flashcards
Chordae Tendineae Function
Chordae Tendineae Function
Prevent backflow of blood from the ventricles into the atria during ventricular contraction.
Atrial Wall Thickness
Atrial Wall Thickness
The atria receive blood from the veins and pump it into the ventricles, requiring less force.
Heart's Blood Supply
Heart's Blood Supply
The coronary arteries, branching directly from the aorta, deliver oxygen and nutrients to the heart muscle.
Heart's Blood Drainage
Heart's Blood Drainage
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Heart's Cardiac Output Proportion
Heart's Cardiac Output Proportion
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Chamber with Largest Blood Supply
Chamber with Largest Blood Supply
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