What is systemic circulation
A.the path of blood between the heart and lungs
B. The path of blood between pharynx and trachea
C. The path of blood as it moves from the head throughout the body and back to the head
D. The path of blood as it moves from the heart throughout the body and back to the heart.
D. The path of blood as it moves from the heart throughout the body and back to the heart.
The correct answer is D. Systemic circulation refers to the path of blood as it moves from the heart throughout the body and back to the heart. It involves the delivery of oxygen-rich blood from the heart to the body's tissues and organs, where oxygen is exchanged for carbon dioxide, and then the return of oxygen-depleted blood back to the heart for reoxygenation.
The correct answer is D. Systemic circulation refers to the path of blood as it moves from the heart to the various organs and tissues throughout the body, and then back to the heart. To arrive at this answer, we can break down the options and analyze each one:
A. The path of blood between the heart and lungs: This refers to pulmonary circulation, which is the flow of blood between the heart and lungs for oxygenation. It does not involve the entire body, so it is not systemic circulation.
B. The path of blood between the pharynx and trachea: This option is incorrect because it refers to a specific region in the respiratory system and is not related to the circulation of blood.
C. The path of blood as it moves from the head throughout the body and back to the head: This option is not entirely accurate. While the head is part of systemic circulation, it also includes all other body parts besides the lungs and heart. Therefore, this option is too limited and not as broad as systemic circulation.
D. The path of blood as it moves from the heart throughout the body and back to the heart: This option accurately describes systemic circulation, as it involves blood being pumped from the heart to all organs and tissues in the body, delivering oxygen and nutrients, and then returning to the heart to be pumped again.
In conclusion, option D is the correct choice, and systemic circulation refers to the movement of blood from the heart throughout the body and back again.