Multiple Choice
Which of the following structures is NOT located within the thoracic cavity?
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1. Introduction to Anatomy & Physiology
Organization of the Body: Thoracic Cavity
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In which subdivision of the thoracic cavity is the heart primarily located?
A
Peritoneal cavity
B
Right pleural cavity
C
Left pleural cavity
D
Pericardial cavity within the mediastinum
Verified step by step guidance1
Step 1: Understand the anatomy of the thoracic cavity, which is divided into three main subdivisions: the two pleural cavities (right and left) and the mediastinum.
Step 2: Recognize that the pleural cavities each contain a lung, so the right pleural cavity contains the right lung and the left pleural cavity contains the left lung.
Step 3: Identify the mediastinum as the central compartment of the thoracic cavity located between the two pleural cavities.
Step 4: Know that the heart is located within the pericardial cavity, which is a specific part of the mediastinum that encloses the heart.
Step 5: Conclude that the heart is primarily located in the pericardial cavity within the mediastinum, not in either pleural cavity or the peritoneal cavity (which is in the abdominal region).
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