Name _____________________ Date _________________ Section ______________________________ Using Your Knowledge EXERCISE 9 A. Identifying Bones and Bone Markings on Radiographs of Skull (a) Anterior view of skull. Identify the structures in Figure 9.26(a). Identify the structures in Figure 9.26(b). 1 Supraorbital ridgebone marking) 2 Nasalbone) 6 3 Vomerbone) 4 Mandiblebone) 1 , 5 Maxillabone) 2 3 4 5 6 Zygomat ic process (bone marking) 7 7 Palatine process (bone marking) 8 8 Spinous process (bone marking) 9 9 vertebral body (bone marking) 10 (b) Lateral view of skull and vertebral column. 10 Intervertebral foramen ( space between bones ) FIGURE 9.26 Radiographs of skull. EXERCISE9AXIALSKELETON B. Identifying Bones and Bone Markings on CT Scans Identify the structures in Figure 9.27(a). 11 11 Parietal (bone) 12 Occipital (bone) 13 Frontal (sinus) 13 14 Sella turcica (bone marking in sphenoid) 12 14 15 External auditory meatus (opening) 15 ANTERIOR 17 16 (a) Lateral view of skull. 18 19 Courtesy Chaim J. Margolin 20 Identify the structures in Figure 9.27(b). 16 Perpendicular plate (bone marking) Occipital condyles Dens 17 Middle nasal concha (bone marking) 18 Maillary (bone sinus) 19 zygomatic process (bone marking) POSTERIOR (b) Thansverse section through skull at the level of the atlas. FIGURE 9.27 CT scans of skull. 20 atlas C1 (bone)