Question at position 26 The pubic symphysis is an example of which type of joint?DiarthrosisSynovial jointAmphiarthrosisSynarthrosis单项选择题
A
Diarthrosis
B
Synovial joint
C
Amphiarthrosis
D
Synarthrosis

Question

Question at position 26 The pubic symphysis is an example of which type of joint?DiarthrosisSynovial jointAmphiarthrosisSynarthrosis

BlackTom AI · Accepted Answer

The question asks to classify the pubic symphysis, a joint in the pelvic region, by its type.
Option 1: Diarthrosis. This term refers to freely movable joints, i.e., synovial joints. The pubic symphysis does not have a wide range of motion and is not a typical synovial joint, so this option is incorrect.
Option 2: Synovial joint. Synovial joints are characterized by a joint cavity, synovial fluid, and a fibrous capsule, allowing significant movement. The pubic symphysis lacks these features and is instead a cartilaginous joint, making this option inaccurate.
Option 3: Amphiarthrosis. Amphiarthroses are joints with limited mobility, often connected by fibrocartilage or symphyseal discs. The pubic symphysis is a classic example of an amphiarthrosis, providing stability with only small movements, which aligns with anatomical understanding.
Option 4: Synarthrosis. Synarthroses are immovable joints, such as sutures in the skull. The pubic symphysis allows minor movement during activities like walking and childbirth, so labeling it as completely immovable is incorrect.
In summary, the pubic symphysis fits the definition of an amphiarthrosis due to its limited but present mobility and fibrocartilaginous connection, while the other options describe joint types that are either too mobile (diarthrosis, synovial) or too immobile (synarthrosis) for this structure.

Question at position 26 The pubic symphysis is an example of which type of joint?DiarthrosisSynovial jointAmphiarthrosisSynarthrosis单项选择题

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