Roentgenogram of head and neck, left lateral view

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Image #35-3
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Roentgenogram of head and neck, left lateral view
The head was turned to the right in this view of the living female subject so that the cervical vertebrae lie in various degrees of rotation. The lower vertebrae are more nearly in the anteroposterior position than the upper ones. The respiratory passages and oral cavity are outlined by their content of air, which produces a dark shadow in the view. Soft tissues are only faintly visible.
1 . Coronal suture
2 . SelIa turcica
3 . Frontal sinus
4 . Superior wall orbit (pointer indicates left orbit)
5 . Nasal bone
6 . Sphenoid sinus (in midline)
7 . Zygomatic bone (margin which borders left temporal fossa indicated by pointer)
8 . Maxillary sinus
9 . Hard palate
10 . Soft palate
11 . Body of hyoid bone
12 . Epiglottis (outlined by air in valleculae and in pharynx)
13 . Upper pointer: Pharyngeal cavum Lower pointer: Laryngeal ventricle
14 . Trachea
15 . Body cervical vertebra VI
16 . Rib I
17 . Lambdoidal suture
18 . Upper pointer: Petrosal part of temporal bone Lower pointer: Mastoid cells
19 . Upper pointer: Condyloid process of mandible Lower pointer: Occipital condyle
20 . Posterior arch atlas
21 . Dens (crossed by anterior arch of atlas)
22 . Cavity between articular processes of right second and third cervical vertebra
23 . Intervertebral foramen (for cervical nerves IV & V)
24 . Area of overlapping of articular processes of fifth and sixth cervical vertebrae
25 . Clavicle