Questions and Answers
The pulmonary artery
Concerning the lymphatic vessels, all are true EXCEPT:
The atrioventricular valves of the heart:
The left ventricle has a thicker wall than the right ventricle because:
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The atrioventricular valves:
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The main site for exchanges in the circulation is:
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The main function of the gap junctions is to:
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Concerning the Gap junction in the cardiac muscle, it:
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The S.A node is the pace-maker for the heart because, it:
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.Regarding cardiac muscle which of the following is false it:
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Study Notes
Pulmonary Artery and Heart Structure
- The left ventricle has a thicker wall than the right ventricle because it pumps blood to the entire body, while the right ventricle only pumps blood to the lungs.
- The atrioventricular valves are located between the atria and ventricles, and they allow blood to flow from the atria to the ventricles while preventing backflow.
Lymphatic Vessels
- One of the options is not true about lymphatic vessels (the correct answer is not provided in the text).
Circulation and Gap Junctions
- The main site for exchanges in the circulation is the capillaries.
- The main function of gap junctions is to allow for the direct exchange of ions and small molecules between adjacent cells.
- Gap junctions in the cardiac muscle allow for the rapid transmission of electrical impulses between cardiac cells, enabling the heart to beat synchronously.
Cardiac Muscle and S.A Node
- The S.A node is the pace-maker for the heart because it has the ability to generate electrical impulses at a faster rate than other parts of the heart.
- One of the options is false regarding cardiac muscle (the correct answer is not provided in the text).
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