Figure 10.4 Anterior view of the skull Ethmoid Bone Frontal Bone Infraorbital Fo

Question

Figure 10.4 Anterior view of the skull Ethmoid Bone Frontal Bone Infraorbital Foramen Inferior Nasal Concha 10 Lacrimal Bone Mandible Maxdila Mental Foramen Middo Nasal Concha Nasal Bone Parietal Bow Perpendicular Plate of Ethmold Bone Spheroid Bone 14 Supracrbital Foramen 15Temporal Bone Vormer Bono . Zygomatic Bone 16 17 located near the posterior lateral tips of the sphenoid Figure 10.4 shows a part of the sphenoid form- conchae, project from the lateral portions of the eth- moid toward the perpendicular plate The superior portion of the ethmoid forms the ing the posterior portion of the eye orbits and an- roof of the nasal cavity and a small part of the ante other part forming a portion of the lateral walls of rior floor of the cranium articulating with the fronta orbital fissure (not la- and sphenoid bones. This portion consists of (1) tw medial to the sphenoid. The cribriform plates (label 2 in Figure 10.3), whic re (not labeled) is below the contain numerous olfactory foramina (label 8) fo the crani the passage of olfactory nerves from the brain the nasal cavity; and (2) the crista galli (label Ii Figure 10.3 and label 4 in Figure 10.7), which pro ects upward into the cranial cavity riform plates. Membranes enclosing the between the cri Ethmoid Bone The ethmoid forms part of the roof of the nasal cav-attached to the crista gallh. ity and part of the medial surface of the orbit (label 4 in Figure 10.1) and closes the anterior portion of

Explanation / Answer

Frontal bone Parietal bone Sphenoid bone Lacrimal bone Nasal bone Middle nasal concha Maxilla Vomer bone Mandible Supraorbital foramen Temporal bone Ethmoid bone Perpendicular plate of ethmoid bone Zygomatic bone Inferior nasal concha Infraorbital foramen Mental foramen

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