Multiple Choice
In the organization of the body, which serous membrane forms the loose-fitting sac surrounding the heart?
1. Introduction to Anatomy & Physiology
Organization of the Body: Serous Membrane Locations
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Which serous membrane specifically surrounds the heart within its cavity?
A
Peritoneum
B
Meninges
C
Pleura
D
Pericardium
Verified step by step guidance1
Understand the concept of serous membranes: Serous membranes are thin layers of tissue that line certain cavities in the body and cover the organs within these cavities. They secrete serous fluid to reduce friction between moving organs.
Identify the location of the heart: The heart is located within the thoracic cavity, specifically in the mediastinum, surrounded by a protective sac.
Learn the specific serous membrane associated with the heart: The serous membrane surrounding the heart is called the pericardium. It consists of two layers: the parietal pericardium (outer layer) and the visceral pericardium (inner layer, also known as the epicardium).
Differentiate the other options: The peritoneum surrounds organs in the abdominal cavity, the meninges protect the brain and spinal cord, and the pleura surrounds the lungs. These membranes are not associated with the heart.
Conclude that the correct serous membrane surrounding the heart is the pericardium, based on its anatomical location and function.
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