Which of the following can be confusing because it is a component of the circulatory system that carries oxygen-rich blood from the lungs to the heart?

Question

BlackTom AI · Accepted Answer

The question asks which option can be confusing because it is a component of the circulatory system that carries oxygen-rich blood from the lungs to the heart.
Option a: Pulmonary red blood cells. This is not a structure; red blood cells are cells that travel in the blood, not a vessel or chamber. The phrasing makes it a tempting misdirection, but it does not describe a component like a vessel or vein.
Option b: Pulmonary arteries. These carry deoxygenated blood from the heart to the lungs, not oxygen-rich blood from the lungs to the heart. This reverses the direction and is a common source of confusion for students who mix up where oxygenation occurs.
Option c: Pulmonary capillaries. While these are the tiny vessels in the lungs where gas exchange occurs, they are not the conduit that carries oxygen-rich blood from the lungs back to the heart; they are part of the exchange site rather than the main transport channel returning blood to the heart.
Option d: Pulmonary veins. This option correctly identifies the vessels that return oxygen-rich blood from the lungs to the heart. The concept that veins carry oxygenated blood in the pulmonary circuit can be confusing because most systemic veins carry deoxygenated blood, so students often confuse the naming and the oxygen content depending on the circulation discussed.
In summary, among the choices, the term that matches the description of carrying oxygen-rich blood from the lungs back to the heart is the pulmonary veins, which is why this option is the focal point of the confusion addressed by the question.

BIO 181 (001&002) FALL 2025 4B - Self-Check: Circulatory System: Cardiac Cycle (LO 4B.1, 4B.2, 4B.3)

Which of the following can be confusing because it is a component of the circulatory system that carries oxygen-rich blood from the lungs to the heart?

查看解析

登录即可查看完整答案

类似问题

The blood vessel that carries blood containing oxygen and nutrients away from the heart to all body tissues except the lungs is the:

The left side of the heart receives oxygenated blood from:

Please note that spelling matters on this question.One- to two-word answer. The main vein that returns deoxygenated blood from the body into the heart is the...

The juncture of the arterial and venous systems is found in the:

Which of the following sequences correctly represents the flow of blood through the circulatory system?

What role does the circulatory system play in removing waste products from the body?

Which of the following is a primary function of the circulatory system?

Which of the following best describes a closed circulatory system?

更多留学生实用工具

考试浏览器助手

风格化写作助手

论文查重助手

文献引用助手

课堂转译助手

课堂笔记助手

Quiz搜索助手

学校历年真题

智能刷题助手

智能匹配练习

希望你的学习变得更简单