20. The systemic circuit has moreless) resistance ance than the pulmonary circui
ID: 277901 • Letter: 2
Question
20. The systemic circuit has moreless) resistance ance than the pulmonary circuit. Therefore, the left ventricle contracts with (greater/lesser) force than the r to prevent the backflow of blood. a 21. Tendinous cords in the sheep heart tether the cusps of Exercise 21.8: Transverse Section of the Sheep Heart 22. When viewing 23. The right and left ventricles pump different volumes of blood due to the difference in ventricular wall thickness. a transverse section of the sheep heart, the right ventricular wall is thickerthinner)thanthe left ventricular w! True/FalseExplanation / Answer
20)The systemic circuit has less resista than pulmonary circuit.Therefore the left ventricle contracts with a greater force than the right ventricle.
The systemic circulation pressure difference is 100mmHg which is far more than pulmonary circulation where pressure difference is 10 mmHg.The systemic circulation is more as it has work against gravity.I n pulmonary circulation blood moves through a short distance but in case of systemic circulation blood has to move to a long distance so the pressure is much more .
21)Tendinous cords in sheep heart tether the cusp of atrioventricular valves to prevent back flow of blood
Tendinous cords are known as chordae tendinae. They act like string s the hold the valves and prevent backflow of blood They are made of fibrous connective tissue and present between papillary muscle and tricuspid and bicuspid valves.
22)when viewing a transverse section of ship heart the right ventricle wall is thinner than left ventricular wall.
This is because left ventricle pumps blood althroughout the hear so it has thickened walls as it is involved in systemic circulation.
23)the right and left ventricle s pump different volumes of blood due to difference in ventricular wall tthickness
True
the thickness of ventricles affect the amount of blood that should be pumped by each ventricle the lleft ventri is involved in systemic circulation so it is much mmom thicker than right ventricle
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