Multiple Choice
In the organization of the thoracic cavity, the heart is contained in the ________ cavity.
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1. Introduction to Anatomy & Physiology
Organization of the Body: Thoracic Cavity
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In the organization of the thoracic cavity, the heart is located within the:
A
Pleural cavity
B
Abdominal cavity
C
Peritoneal cavity
D
Pericardial cavity (within the mediastinum)
Verified step by step guidance1
Step 1: Understand the anatomical divisions of the thoracic cavity. The thoracic cavity is divided into three main compartments: two pleural cavities (each surrounding a lung) and the mediastinum, which is the central compartment.
Step 2: Identify the location of the heart. The heart is situated within the mediastinum, which lies between the two pleural cavities.
Step 3: Recognize the specific cavity that encloses the heart. The heart is enclosed by the pericardial cavity, a fluid-filled space within the mediastinum that provides protection and reduces friction during heartbeats.
Step 4: Differentiate the other cavities mentioned. The pleural cavity surrounds the lungs, the abdominal cavity contains digestive organs, and the peritoneal cavity is a potential space within the abdominal cavity lined by the peritoneum.
Step 5: Conclude that the heart is located within the pericardial cavity, which is part of the mediastinum in the thoracic cavity.
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