Summary 9.3 Cartilaginous Joints - Anatomy and Physiology 2e | OpenStax openstax.org
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Cartilaginous joints connect bones with cartilage, offering stability and restricted movement in the body.
Slides
Slide Presentation (5 slides)
Key Points
- Cartilaginous joints are joints where adjacent bones are united by cartilage.
- There are two types of cartilaginous joints: synchondrosis and symphysis.
- A synchondrosis is a cartilaginous joint where bones are joined by hyaline cartilage.
- A symphysis is a cartilaginous joint where bones are joined by fibrocartilage.
- Synchondroses can be temporary, like the epiphyseal plate, or permanent, like the sternocostal joint.
- Symphyses, like the pubic symphysis and intervertebral symphysis, allow for limited movement and are important for cushioning between bones.
- Cartilaginous joints are functionally classified as either synarthroses (no movement) or amphiarthroses (limited movement).
Summaries
18 word summary
Cartilaginous joints, like synchondroses and symphyses, connect bones with cartilage, providing stability and limited movement in the body.
65 word summary
Cartilaginous joints, including synchondroses and symphyses, connect bones through cartilage. Synchondroses are joined by hyaline cartilage, which can be temporary or permanent. Examples include the epiphyseal plate and joints between rib and costal cartilage. Symphyses are joined by fibrocartilage, which is strong and allows for slight movement. Examples include the pubic symphysis and intervertebral symphysis. Cartilaginous joints provide stability and limited movement in the body.
221 word summary
Cartilaginous joints connect adjacent bones through cartilage and can be classified into two types: synchondroses and symphyses.
Synchondroses consist of bones joined by hyaline cartilage, which can be temporary or permanent. An example of a temporary synchondrosis is the epiphyseal plate in growing long bones, where equal rates of cartilage growth and bone formation allow for bone lengthening. In late teens or early 20s, cartilage growth slows and the epiphyseal plate is replaced by bone, resulting in synostosis or fusion. Other examples of synchondroses include joints between rib and costal cartilage and sacral vertebrae.
Symphyses, on the other hand, are joints where bones are joined by fibrocartilage. This type of cartilage is strong due to its thick collagen fibers, allowing it to resist forces. Symphyses can have narrow or wide gaps between bones. Examples include the pubic symphysis and the manubriosternal joint with narrow gaps, and the intervertebral symphysis with a wide gap.
Cartilaginous joints are classified as synarthroses (immovable) or amphiarthroses (slightly movable). Synchondroses are immovable, while symphyses are slightly movable.
In summary, cartilaginous joints connect bones with cartilage and can be synchondroses or symphyses. Their classification depends on the type of cartilage connecting the bones. Synchondroses have hyaline cartilage and can be temporary or permanent, while symphyses have fibrocartilage. These joints provide stability and limited movement in the body.
373 word summary
Cartilaginous joints are a type of joint where adjacent bones are connected by cartilage. There are two types of cartilaginous joints: synchondroses and symphyses.
Synchondroses are joints where the bones are joined by hyaline cartilage. They can be temporary or permanent. An example of a temporary synchondrosis is the epiphyseal plate, which is found in growing long bones. The epiphyseal plate consists of hyaline cartilage that connects the diaphysis (shaft) and epiphysis (end) of the bone. During childhood growth, the rates of cartilage growth and bone formation are equal, allowing the bone to lengthen. However, in late teens or early 20s, the cartilage growth slows and eventually stops. The epiphyseal plate is then replaced by bone, resulting in the fusion of the diaphysis and epiphysis into a single adult bone. This fusion is called synostosis. Other examples of synchondroses include the joints between the rib and costal cartilage in the thoracic cage and the sacral vertebrae in the sacrum.
Symphyses, on the other hand, are joints where the bones are joined by fibrocartilage. Fibrocartilage is strong due to its thick collagen fibers, which allows it to resist pulling and bending forces. Symphyses have a narrow or wide gap between the bones. Examples of symphyses with a narrow gap include the pubic symphysis and the manubriosternal joint. The pubic symphysis connects the pubic portions of the hip bones, while the manubriosternal joint connects the manubrium and body portions of the sternum. The intervertebral symphysis is an example of a wide symphysis. It is located between the bodies of adjacent vertebrae and is filled with a thick pad of fibrocartilage called an intervertebral disc. This disc provides cushioning and allows for small movements between the vertebrae.
Cartilaginous joints are functionally classified as synarthroses (immovable) or amphiarthroses (slightly movable) depending on the amount of movement they allow. Synchondroses are immovable, while symphyses are slightly movable.
In conclusion, cartilaginous joints play an important role in connecting bones with cartilage. They can be either synchondroses or symphyses, and their classification depends on the type of cartilage that connects the bones. Synchondroses are joined by hyaline cartilage and can be temporary or permanent, while symphyses are joined by fibrocartilage. These joints provide stability and limited movement in the body.