The lungs are?
A. Connected by the mediastinum
B. Separated by the mediastinum
C. Divided into 7 lobes
D. Divided into 9 lobes
C?
To answer this question, we need to understand the anatomy of the lungs and how they are divided. The lungs are a pair of organs located in the chest cavity, specifically in the thoracic cavity. They play a crucial role in the respiratory system by allowing oxygen to enter the body and carbon dioxide to exit.
Now, let's address each option to determine the correct answer:
A. Connected by the mediastinum: The mediastinum is a region in the middle of the chest that contains various organs, including the heart, blood vessels, and esophagus. However, it does not connect the lungs. So, this option is incorrect.
B. Separated by the mediastinum: This option is correct. The lungs are separated by the mediastinum, which means there is a division between them. The mediastinum acts as a central partition, providing support and space for other thoracic structures.
C. Divided into 7 lobes: The human lungs are not divided into 7 lobes. This option is incorrect.
D. Divided into 9 lobes: Similarly, the human lungs are not divided into 9 lobes. This option is also incorrect.
Overall, the correct answer is B. The lungs are separated by the mediastinum.