The main type of joints found between the bones of the skull are sutures , which are immovable fibrous joints.

Key answer

  • The bones of the skull (especially the cranial bones around the brain) are joined by suture joints , a type of fibrous, immovable joint (also called synarthrosis).
  • These sutures are locked together by dense connective tissue and allow no movement , which helps protect the brain.

So, if this is a typical biology/exam-style question, the expected answer is:

The joints in the skull are immovable fibrous joints called sutures.

(For extra context: the lower jaw forms a movable synovial joint with the skull called the temporomandibular joint, but this is usually not what exam questions mean when they ask about “joints in the skull”.)

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