The primary structure responsible for pumping blood for circulation through the ...
Question
The primary structure responsible for pumping blood for circulation through the mammalian circulatory systems is the
Options
Related Lesson: Single and Double Circulation Systems | Animal Systems
The correct answer is D.
Explanation:
The question is asking which part of the mammalian circulatory system is responsible for pumping blood for circulation. The options given are veins, right auricle, arteries and left ventricle. The correct answer is option D, which is the left ventricle.
The mammalian circulatory system consists of the heart, blood vessels, and blood. The heart is responsible for pumping blood through the blood vessels to different parts of the body. The heart has four chambers - the right atrium, right ventricle, left atrium and left ventricle.
The left ventricle is the primary structure responsible for pumping oxygenated blood out of the heart and into the aorta, which then carries the blood to the rest of the body. The left ventricle is a muscular chamber that is capable of generating high pressure to ensure that blood is pumped efficiently through the circulatory system.
In contrast, veins are blood vessels that carry deoxygenated blood back to the heart, while arteries are blood vessels that carry oxygenated blood away from the heart. The right auricle is one of the chambers of the heart, but it is not primarily responsible for pumping blood for circulation.
Therefore, the correct answer to the question is option D, the left ventricle. This is the primary structure responsible for pumping blood for circulation through the mammalian circulatory system.
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The answer is arteries
The mammalian heart is divided into four chambers: The left and right Auricles and The left and right Ventricles. The walls of the Ventricles are normally thicker than those of the Auricles. Again, the wall of the LEFT VENTRICLE is Thicker and more Muscular than that of the The right ventricle. This is because it is through the LEFT VENTRICLE that BLOOD IS PUMPED or forced out of the heart; and then through the arteries (and veins); to all parts of the body.
Adapted from my personal favourite Biology Textbook, Essential Biology by MC Michael.