Prior to their fusion, what are the two functional roles of the sutures? 

The cranial sutures are difficult to see in plain radiographs. In the following images, we have added annotations to help you identify them. Please note the neonatal skull and associated sutures diagrammatically displayed below for your reference

Schuenke et al., 2010, Thieme Atlas of Anatomy: Head and Neuroanatomy. Thieme, Stuttgart, p. 7

What type of joint are cranial sutures?

Based on the appearance of the urethra what structure would you typically expect to find immediately posterior to this person’s bladder and urethra?