Which of the following sequences is truly a systemic circulation pathway?

Right ventricle -> Pulmonary aorta -> Tissues -> Pulmonary veins -> Left auricle

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Right auricle -> Left ventricle -> Aorta -> Tissues -> Veins -> Right auricle

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Left auricle ->Left ventricle -> Pulmonary veins -> Tissues -> Right auricle

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Left auricle ->Left ventricle -> Aorta ->Arteries -> Tissues -> Veins -> Right atrium

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Solution

The correct option is D Left auricle ->Left ventricle -> Aorta ->Arteries -> Tissues -> Veins -> Right atrium
The correct answer is D.
Oxygen-rich blood flows from the lungs back into the left atrium, or the left upper chamber of the heart, through four pulmonary veins.
Oxygen-rich blood then flows through the mitral valve into the left ventricle, or the left lower chamber. The left ventricle pumps the oxygen-rich blood through the aortic valve into the aorta, the main artery that takes oxygen-rich blood out to the rest of the body.
Oxygen-poor blood returns from the body to the heart through the superior vena cava and inferior vena cava, the two main veins that bring blood back to the heart. The oxygen-poor blood enters the right atrium, or the right upper chamber of the heart.

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Match the parts of the heart in Column I with the direction of flow of blood in Column II
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Given below is a set of five terms. Arrange and rewrite each set of terms in the correct order to be in a logical sequence.
(i) Water molecules, oxygen, grana, hydrogen and hydroxyl ions, protons.
(ii) Right auricle, left ventricle, vena cava, pulmonary vein, lungs, right ventricle, pulmonary artery, aorta, left auricle
(iii) Graafian follicle, oviducal funnel, fallopian tube, ovum uterus
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(v) Spongy cell, upper epidermis, stoma, palisade tissue, sub-stomatal space

Q. Match the following chambers of the heart with the respective blood vessels:

	Column A		Column B
$1.$	Right atrium	$a .$	Pulmonary vein
$2.$	Left atrium	$b .$	Aorta
$3.$	Right ventricle	$c .$	Superior vena cava
$4.$	Left ventricle	$d .$	Pulmonary artery

Q. Match the terms given in Column I with terms in Column II:

Column I	Column II
(i) Left-auricle	(a) Clotting
(ii) Right auricle	(b) Thebasius value
(iii) Left ventricle	(c) Pulmonary vein
(iv) Right-ventricle	(d) Aorta
(v) Fibrin	(e) Pulmonary arch

Q. Read the statements and select the option which best describes the process that occurs during systematic circulation.
(i) The left atrium receives the oxygenated blood through the pulmonary veins. The left ventricle pumps the blood through the aorta to various parts and the de-oxygenated blood reaches right atrium.
(ii) The left atrium receives the oxygenated blood through pulmonary veins and pumps the blood through the aorta to various parts and the de-oxygenated blood reaches the right atrium.
(iii) The left atrium receives de-oxygenated blood and pumps into left ventricles which in turn pumps into pulmonary artery for oxygenation.
(iv) The right atrium receives the de-oxygenated blood and pumps into pulmonary artery for oxygenation.

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