neuron (Nerve Cell) - Drawing by Santiago Ramón y Cajal of neurons in the pigeon cerebellum. (A) Denotes Purkinje cells, an example of a multipolar neuron. (B) Denotes granule cells which are also multipolar.
this is called a cranial suture and it connects the different plates of the skull. It is made up of small ligaments that actually move ever so little with breathing. With disease or pathology these will become hardened.