2. Parieto temporal suture.
3. Parietal bone.
4. Occipital bone.
5. Temporal bone.
Explanation:
The 1 as mentioned is the nasal bone. It is joint with the maxilla and forms the structure of nose.
The marking of 2 is the Parieto temporal suture. This suture is a squamosal suture, with a peculiar type of structure. This joins two bones namely parietal bone and temporal bone.
The 3 is the parietal bone. This bone joins with Frontal bone at front, temporal bone on sides, with another parietal bone on the middle, and occipital bone in the posterior part.
4 is the occipital bone which joins with the parietal bone in lambdoid suture.
And the 5 is the temporal bone present laterally to cranial cavity.
