The joints of the adult skull bones are _____________ , which makes the joint __________________.

Question

BlackTom AI · Accepted Answer

The question asks about the type of joints in the adult skull bones and the nature of the joint.
Option a: 'synarthrosis, immovable.' This is correct because the sutures between adult skull bones are fibrous joints that allow essentially no movement, i.e., they are synarthroses, immovable joints. 
Option b: 'diarthrosis, movable.' A diarthrosis is a freely movable joint, such as the knee or elbow, which does not describe skull sutures; skull joints do not permit visible movement, so this is incorrect.
Option c: 'amphiarthrosis, slight movable.' Amphiarthroses are joints with limited movement (e.g., the intervertebral joints) but skull sutures do not have any appreciable movement, so this characterization is inaccurate.
Option d: 'amphiarthrosis, immovable.' This combines two conflicting ideas: amphiarthrosis implies some movement, while immovable indicates no movement. Since skull sutures are immovable, labeling them as amphiarthrosis is incorrect.
In summary, the skull sutures are best described as synarthroses (immovable fibrous joints), which aligns with the established anatomy of adult skull joints.

The joints of the adult skull bones are _ , which makes the joint ______.单项选择题

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The joints of the adult skull bones are _____________ , which makes the joint __________________.单项选择题