Podcast
Questions and Answers
Which of the following ribs is classified as a true rib?
Which of the following ribs is classified as a true rib?
Which of these features distinguishes the visceral pleura from the parietal pleura?
Which of these features distinguishes the visceral pleura from the parietal pleura?
What is the function of the pleural cavity?
What is the function of the pleural cavity?
How are the 8th, 9th, and 10th pairs of ribs attached anteriorly?
How are the 8th, 9th, and 10th pairs of ribs attached anteriorly?
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Which statement about the floating ribs is true?
Which statement about the floating ribs is true?
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The parietal pleura is sensitive to which of the following?
The parietal pleura is sensitive to which of the following?
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Study Notes
Ribs
- The ribs are classified into three groups based on their relationship to the sternum.
- True ribs are the upper 7 pairs that are attached anteriorly to the sternum by their costal cartilages.
- False ribs are the 8th, 9th, and 10th pairs that are attached anteriorly to each other and to the 7th rib by means of their costal cartilages.
- Floating ribs are the 11th and 12th pairs that are short ribs that do not attach to the sternum at all.
Rib Cage
- The rib cage consists of 12 pairs of ribs, classified into true, false, and floating ribs.
- The 1-7 pairs are true ribs.
- The 8-10 pairs are false ribs.
- The 11-12 pairs are floating ribs.
Pleura
- The pleura is a serous membrane that lines the lungs and thoracic cavity.
- It permits efficient and effortless respiration.
- The pleura is divided into two parts: visceral and parietal.
Structure of the Pleura
- Visceral pleura covers the outer surface of the lungs and extends into the interlobar fissures.
- Visceral pleura is insensitive to pressure, pain, and temperature.
- Parietal pleura covers the internal surface of the thoracic cavity.
- Parietal pleura is sensitive to pressure, pain, and temperature.
- There is a potential space between the visceral and parietal pleura, known as the pleural cavity.
- The pleural cavity contains a small volume of serous fluid to lubricate the surfaces of the pleura.
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Description
Learn about the different types of ribs and how they are classified based on their relationship to the sternum.
