Which term describes a joint that is immovable?

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Study for the Muscular System and Skeletal System Exam. Learn with flashcards and multiple choice questions, where each question has explanations and hints. Be well-prepared and confident on your test day!

Multiple Choice

Which term describes a joint that is immovable?

Explanation:
Immovable joints are fixed joints, a type of synarthrosis. They’re held together by dense fibrous tissue so there’s no movement between the bones. In the skull, the sutures are fixed joints, keeping the cranium rigid to protect the brain. That’s why fixed joint is the term for an immovable joint. By contrast, a pivot joint allows rotation; the mandible forms a movable jaw joint with the skull; and the cranium refers to the skull bones themselves, not a joint.

Immovable joints are fixed joints, a type of synarthrosis. They’re held together by dense fibrous tissue so there’s no movement between the bones. In the skull, the sutures are fixed joints, keeping the cranium rigid to protect the brain. That’s why fixed joint is the term for an immovable joint. By contrast, a pivot joint allows rotation; the mandible forms a movable jaw joint with the skull; and the cranium refers to the skull bones themselves, not a joint.

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