Which of the following is the correct order of blood movement through the heart?
Group of answer choices
a.)vena cava -> Body -> left atrium -> left ventricle -> pulmonary artery -> lungs -> right atrium -> right ventricle -> aorta
b.)vena cava -> right atrium -> right ventricle -> pulmonary artery -> lungs -> left atrium -> left ventricle -> aorta -> body
c.)left atrium -> left ventricle -> pulmonary artery -> lungs -> right atrium -> right ventricle -> aorta -> vena cava -> body
d.)Body -> left atrium -> left ventricle -> pulmonary artery -> lungs -> right atrium -> right ventricle -> aorta -> body
e.)vena cava -> left atrium -> left ventricle -> pulmonary artery -> lungs -> right atrium -> right ventricle -> aorta -> body
The correct answer and explanation is :
The correct answer is:
b.) vena cava → right atrium → right ventricle → pulmonary artery → lungs → left atrium → left ventricle → aorta → body
Explanation:
The circulatory system moves blood through the heart in a specific sequence, ensuring that oxygen-rich and oxygen-poor blood do not mix. The heart is divided into four chambers: the right atrium, right ventricle, left atrium, and left ventricle.
- Deoxygenated Blood from the Body (Vena Cava to Right Atrium)
Blood from the body, which is low in oxygen and high in carbon dioxide, returns to the heart through two large veins: the superior vena cava (from the upper body) and the inferior vena cava (from the lower body). This blood enters the right atrium. - Right Atrium to Right Ventricle
The right atrium contracts, pushing blood through the tricuspid valve into the right ventricle. - Right Ventricle to Pulmonary Artery (Lungs)
The right ventricle pumps blood through the pulmonary valve into the pulmonary artery, which carries the blood to the lungs for oxygenation. - Oxygenation in the Lungs
In the lungs, carbon dioxide is released, and oxygen is absorbed. Oxygenated blood then returns to the heart through the pulmonary veins into the left atrium. - Left Atrium to Left Ventricle
The left atrium contracts, pushing blood through the mitral (bicuspid) valve into the left ventricle. - Left Ventricle to Aorta (Body Circulation)
The left ventricle pumps oxygen-rich blood through the aortic valve into the aorta, which distributes blood to the entire body.
This cycle repeats continuously to supply oxygen and nutrients to the body while removing carbon dioxide and waste.
Here is an anatomical diagram of the human heart illustrating the correct pathway of blood circulation. The diagram labels the major structures and uses arrows to indicate the flow of oxygenated (red) and deoxygenated (blue) blood.