Within the thoracic cavity, what spaces contain the lungs and the heart?

Prepare for the Marieb Language of Anatomy Exam. Utilize multiple choice questions, flashcards, and explanations for each answer. Ace your exam with confidence!

Multiple Choice

Within the thoracic cavity, what spaces contain the lungs and the heart?

Lungs are housed in the pleural cavities, which are the spaces between the visceral pleura covering the lungs and the parietal pleura lining the thoracic wall. The heart sits in the pericardial cavity, a closed space within the mediastinum that contains the heart and great vessels. This arrangement matches the described answer: the lungs are in the pleural cavities, and the heart is in the pericardial cavity inside the mediastinum. The other options mix abdominal spaces (peritoneal and retroperitoneal) or refer to membranes rather than actual lung-containing spaces, or incorrectly pair the lungs with the mediastinum.

Lungs are housed in the pleural cavities, which are the spaces between the visceral pleura covering the lungs and the parietal pleura lining the thoracic wall. The heart sits in the pericardial cavity, a closed space within the mediastinum that contains the heart and great vessels.

This arrangement matches the described answer: the lungs are in the pleural cavities, and the heart is in the pericardial cavity inside the mediastinum. The other options mix abdominal spaces (peritoneal and retroperitoneal) or refer to membranes rather than actual lung-containing spaces, or incorrectly pair the lungs with the mediastinum.

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