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Questions and Answers
What structures are contained within the thoracic cavity?
What structures are contained within the thoracic cavity?
- Only blood vessels
- Lungs only
- Diaphragm and liver
- Heart, oesophagus, trachea, and thymus gland (correct)
Which quadrant of the abdomen contains the appendix?
Which quadrant of the abdomen contains the appendix?
- Left Lower Quadrant
- Left Upper Quadrant
- Right Lower Quadrant (correct)
- Right Upper Quadrant
What is the primary function of the abdominal cavity?
What is the primary function of the abdominal cavity?
- To facilitate breathing
- To protect visceral organs (correct)
- To house the lungs
- To store blood
What are the borders of the thoracic region?
What are the borders of the thoracic region?
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How many pleural cavities are present in the thoracic region?
How many pleural cavities are present in the thoracic region?
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Study Notes
Thoracic Region
- Spans from the first thoracic vertebra to the diaphragm.
- Anterior superior borders defined by the first rib and costae; posterior inferior border marked by the 12th vertebra.
- Divided into thoracic cavity above the diaphragm and abdominal cavity below it.
- Contains three smaller cavities:
- Two pleural cavities housing the lungs (right and left).
- One thoracic cavity housing the heart, esophagus, trachea, thymus gland, and arch of the aorta.
- Blood vessels branch out to supply essential organs.
Abdominal Region
- Extends from the diaphragm inferiorly to the pelvic area.
- Lacks a membrane, hence referred to as the abdominal region.
- Forms the abdominopelvic cavity, protecting critical visceral organs.
Clinical Division of the Abdomen into 4 Quadrants
- Right Upper Quadrant: Contains right lobe of liver, right kidney, and hepatic flexure of colon.
- Right Lower Quadrant: Houses the appendix.
- Left Upper Quadrant: Comprises left kidney and left upper lobe of liver.
- Left Lower Quadrant: No specific organs listed.
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