Question

Name the type of joint between the cranial bones

Answer 1

The bones of the skull are divided into the cranial bones which form the cranium and facial bones which help to make up the face.

Complete answer:
Cranial bone growth starts in the early embryo from the neural crest and mesoderm cells. The cranial bones grow by the way of intra membranous ossification and endochondral ossification. Endochondral ossification replaces cartilage structures with bone, at the same time as intramembranous ossification is the arrangement of bone tissue from mesenchymal connective tissue.
The cranial bones of the skull connect together over time. They must be bendable as a baby passes through the narrow birth canal they have to also expand as the brain grows in size. The gaps in between the neurocranium before they combine at different times are generally termed as fontanelles.
The structure of the skull is a highly exhaustive and complex design. Altogether, there are 22 bones comprising the entire skull, devoid of the 3 pairs of ossicles located in the inner ear. The bones of the skull are very irregular. The majority of the bones of the skull are held together by hard, permanent fibrous joints called sutures or synarthroses. These joints allow the developing skull to grow both pre- and postnatally.

The sutures of the skull are morphologically divergent, being separated into three main groups based on the margins of the articulating bones. Next to a simple suture, the margins of the articulating bones are soft and meet end to end such as the median palatine suture. A suture is where the border of one bone overlaps that of the further like the parieto temporal suture. On the other hand, the borders of the bones possibly will have a number of projections that interdigitate with all others, giving a notched appearance, such as in the sagittal suture. The difficulty of the serrations of the sutures increases from internal to external.
Fibrous joints are there between cranial bones. These joints are not movable joints which have no joint cavity and are associated through fibrous connective tissue. The skull bones are linked by fibrous joints.

Note: The cranial bones include the following such as parietal , temporal , frontal, occipital, ethmoid and sphenoid bones