6 Questions
Which structure in the thoracic cavity accommodates the heart?
Cardiac notch
How many bronchopulmonary segments are present in each lung?
10
What is the function of the cardiac notch?
To protect the heart
Which structure occupies all of the thoracic cavity except the mediastinum?
Lungs
What is the narrow superior tip of the lung called?
Apex
What is the inferior surface of the lung that rests on the diaphragm called?
Base
Study Notes
Thoracic Cavity Structures
- The pericardium, a fibrous sac, accommodates the heart in the thoracic cavity.
Lung Structure
- Each lung has 10 bronchopulmonary segments.
Cardiac Notch
- The cardiac notch is a concave region in the left lung that accommodates the heart.
Thoracic Cavity Occupation
- The lungs occupy all of the thoracic cavity except the mediastinum, which is a region between the lungs that contains the heart, trachea, and other organs.
Lung Surfaces
- The apex is the narrow superior tip of the lung.
- The base is the inferior surface of the lung that rests on the diaphragm.
Test your knowledge on the cardiac notch and bronchopulmonary segments with this informative quiz. Learn about the cavity that houses the heart and the specific divisions within the lungs.
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