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Human Anatomy & Physiology (11th Edition)
Human Anatomy & Physiology (11th Edition)
11th Edition
ISBN:9780134580999
Author:Elaine N. Marieb, Katja N. Hoehn
Publisher:Elaine N. Marieb, Katja N. Hoehn
Chapter1: The Human Body: An Orientation
Section: Chapter Questions
Problem 1RQ: The correct sequence of levels forming the structural hierarchy is A. (a) organ, organ system,...
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### Rib Cage Anatomy The human rib cage consists of 12 pairs of ribs, which are categorized as vertebrosternal (true) ribs, vertebrochondral (false) ribs, and vertebral (floating) ribs. The diagram below provides a detailed view of the rib cage and its components. #### Diagram Explanation: 1. **False Ribs** - These ribs do not attach directly to the sternum. They are connected to the vertebrochondral ribs above them. 2. **Manubrium of Sternum** - The upper part of the sternum. 3. **Sternal Angle** - The junction between the manubrium and the body of the sternum. 4. **Body of Sternum (Gladiolus)** - The long, central part of the sternum. 5. **Sternum** - The breastbone, to which ribs are anchored. 6. **Vertebral (Floating) Ribs** - The last two pairs of ribs (11 and 12), which do not attach to the sternum at all. 7. **Vertebrochondral Ribs** - Ribs that are indirectly connected to the sternum through cartilage. 8. **Vertebrosternal (True) Ribs** - The first seven pairs of ribs attached directly to the sternum via costal cartilages. 9. **Xiphoid (Ensiform) Process** - The small, cartilaginous process at the lower end of the sternum. This diagram illustrates the structure and different parts of the rib cage, which provides protection for vital organs and structural support for the body.
Transcribed Image Text:### Rib Cage Anatomy The human rib cage consists of 12 pairs of ribs, which are categorized as vertebrosternal (true) ribs, vertebrochondral (false) ribs, and vertebral (floating) ribs. The diagram below provides a detailed view of the rib cage and its components. #### Diagram Explanation: 1. **False Ribs** - These ribs do not attach directly to the sternum. They are connected to the vertebrochondral ribs above them. 2. **Manubrium of Sternum** - The upper part of the sternum. 3. **Sternal Angle** - The junction between the manubrium and the body of the sternum. 4. **Body of Sternum (Gladiolus)** - The long, central part of the sternum. 5. **Sternum** - The breastbone, to which ribs are anchored. 6. **Vertebral (Floating) Ribs** - The last two pairs of ribs (11 and 12), which do not attach to the sternum at all. 7. **Vertebrochondral Ribs** - Ribs that are indirectly connected to the sternum through cartilage. 8. **Vertebrosternal (True) Ribs** - The first seven pairs of ribs attached directly to the sternum via costal cartilages. 9. **Xiphoid (Ensiform) Process** - The small, cartilaginous process at the lower end of the sternum. This diagram illustrates the structure and different parts of the rib cage, which provides protection for vital organs and structural support for the body.
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