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
Multiple Choice
In the organization of the thoracic cavity, the human heart is primarily located in which region?
A
Left pleural cavity
B
Right pleural cavity
C
Abdominal cavity
D
Mediastinum (within the pericardial cavity)
Verified step by step guidance1
Step 1: Understand the anatomical divisions of the thoracic cavity. The thoracic cavity is divided into three main compartments: the left pleural cavity, the right pleural cavity, and the mediastinum.
Step 2: Recognize that the pleural cavities each contain a lung, so the left pleural cavity contains the left lung and the right pleural cavity contains the right lung.
Step 3: Identify the mediastinum as the central compartment of the thoracic cavity, which lies between the two pleural cavities.
Step 4: Know that the mediastinum contains several vital structures, including the heart, trachea, esophagus, and major blood vessels.
Step 5: Conclude that the heart is located within the mediastinum, specifically inside the pericardial cavity, which is a fluid-filled sac that surrounds and protects the heart.
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