Understanding the Anatomy of the Skull: Facial and Cranial Bones
This comprehensive guide covers the bones of the skull, including the mandible, maxillae, nasal bones, and various cranial bones such as the frontal and occipital bones. Learn about the key features, functions, and relevant sutures involved in skull anatomy. The maxilla forms a significant part of the upper jaw and houses the maxillary sinus, while the mandible serves as the lower jaw and supports mastication. Explore the intricate structures like the lacrimal bone and the nasal cavity, along with the foramen of the skull base, essential for nerve and blood vessel passage.
Understanding the Anatomy of the Skull: Facial and Cranial Bones
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Presentation Transcript
Group 2 Fatin, Aishah, Zafirah, Laila, Masyitah, Amalina, Aimi
Mandible 1 Vomer 2 Inferior nasal conchae 2 Lacrimal bones 2 Maxillae 2 Nasal bones Palatine bones 2 Zygomatic bones 1Ethmoid bone Frontal bone 1 Occipital bone Parietal bones Sphenoid bone Temporal bones
ADDITIONAL SKULL FEATURES • Major sutures • Paranasal sinuses • Hyoid bone
Maxilla • Forms the majority of the skeleton of the face and the upper jaw • Contains the maxillary sinus • Articulates with the opposite maxilla and the frontal, sphenoid, nasal, vomer, and ethmoidbones; inferior nasal concha, palatine, lacrimal, and zygomatic bones; and septal and nasal cartilages
Mandible • Forms the lower jaw • Described as horseshoe shaped • All muscles of mastication attach to the mandible • Consists of body of mandible, ramus, coronoid process, condylar process, alveolar process
Lacrimal Bone • Small and rectangular in shape • Very thin and fragile • Forms a small portion of medial wall of the orbit • Articulates with frontal process of the maxilla, orbital plate of the ethmoid bone, frontal bone and inferior nasal concha • The region that articulates with the frontal process of the maxilla forms the lacrimal fossa →the location of the lacrimal sac • The inferior part of the lacrimal forms a small portion of the lateral wall of the nasal cavity
What is foramen? • A foramen (pl. foramina) is an opening. • Foramina allow muscles, nerves, arteries, veins, or other structures to connect one part of the body with another.
