Question

Find the correct order of blood circulation through heart
A. Right atrium, Right ventricles, Lungs, left atrium, left ventricle, Body
B. Right ventricle, Right atrium, Lungs, Left atrium, Left ventricle, Body
C. Left atrium, Left ventricle, Lungs, Right atrium, Right ventricle, Body
D. Left ventricle, Left atrium, Lungs, Right atrium, Right ventricle, Body

Answer 1

Hint: Circulation is a process in which blood circulates throughout the body. Blood contains nutrition, oxygen, and waste products. Blood circulates in the blood vessels.

Complete answer:
Circulation system includes
1. Heart
2. Blood vessels
3. Lungs
4. Blood
The human heart is a closed circulatory system and double circulatory. The upper chambers are known as atria and the lower chambers known as ventricles. A thin wall of muscle separates right and left atria called the atrial septum. The lower right and left ventricle is separated by a thick muscle wall called the interventricular septum. The atrium and the ventricle of the same side are also separated by the atrioventricular septum. Vena cava collects deoxygenated blood from tissue and carries towards the right atrium from the right atrium, blood enters into the right ventricle then the deoxygenated blood enters the lungs through the pulmonary artery. In the lungs deoxygenated blood to convert into oxygenated blood then this oxygenated blood enters into the left atrium through the pulmonary vein and then enters the left ventricle. From the ventricle, the oxygenated blood enters into the body tissue through the dorsal aorta.

So, the correct option is (A).

Additional Information: Open blood circulatory system: In which blood pump by heart directly bathes the organs. Example: insects, prawns, spiders.
Closed circulatory system: In which blood circulated through a closed network of blood vessels. Example: Annelids, Chordates. All vertebrates have a closed circulatory system.

Note: Heart beat normally 70-75 times in a minute. The human heart is a mesodermally derived organ. The human heart has a four-chamber. The heart has the size of a clenched fist. Pericardium double membranous bag like structure protects the heart.