Question

Which sequence shows the correct path of blood flow between the heart and lungs?

Answer 1

Answer:

Explanation:

The exchange of blood between the lungs and the heart takes place in 7 steps. At first, oxygenated blood from the heart is pumped to the upper and lower parts of the body through the aorta. In the body, it picks up wastes and carbon dioxide. This blood becomes deoxygenated and returns to the heart through inferior and superior vena cava. On arrival, blood enters the heart through the right atrium where it is then pumped to the right ventricle. Through the pulmonary artery, deoxygenated blood is pumped to the lungs by the right ventricle. In the lungs the blood gets oxygenated. The arteries reduce to capillaries surrounding alveolus where blood collects oxygen. Through the pulmonary vein, the oxygenated blood leaves the lungs and flows back to the heart. It enters the heart through the left atrium which pumps it to the right atrium. The oxygenated blood is then pumped from the heart to the rest of the body through the aorta creating a form of cycle

Answer 2

The  sequence that shows the 'correct path' of 'blood flow' between the 'heart' and 'lungs' is:

• The circulated blood, which has 'lost' its "oxygen" and collected carbon di oxide enters in to "right atrium" of the heart via vena cava .

• The blood is then pumped to right ventricle via tricuspid valve from right atrium contraction.

• Then blood is pumped in to lungs through pulmonary artery from right ventricle.

• In the lungs, "carbon dioxide" from the blood is absorbed by blood vessels called capillaries and replaced with oxygen.

• Oxygenated blood taken in to left atrium through pulmonary veins, then in to left ventricle via mitral valve .

• The blood is send to left ventricle and to 'aortic arch' on its way to all part of body from left side of heart.
• Blood is pumped through carotid artery in to brain, in to arms via auxiliary arteries, in to torso and leg via aorta.  

• Blood moves in to arteries through capillaries and return to veins

• Deoxygenated blood will return to heart.

• The cycle repeats.