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Shown is norma basalis, which refers to the base of the cranium. Labels: 1, external occipital crest; 2, superior curved line of the occipital bone; 3, foramen magnum; 4, occipital condyle; 5, digastric groove; 6, mastoid process; 7, external auditory meatus; 8, styloid process; 9, glenoid fossa; 10, foramen spinosum; 11, sphenoidal spine; 12, foramen ovale; 13, external pterygoid plate; 14, hamular process of internal pterygoid plate; 15, nasal septum; 16, posterior nasal spine; 17, horizontal plate of palate bone; 18, palatal process of superior maxilla; 19, anterior palatine canal; 20, intermaxillary suture; 21, posterior palatine canal; 22, malar process of superior maxilla; 23, spheno-maxillary fissure; 24, zygomatic fossa; 25, zygomatic arch; 26, posterior openings of left nasal fossa; 27, pterygoid fossa; 28, scaphoid fossa; 29, foramen lacerum medium; 30, opening of osseous Eustachian canal; 31, carotid canal; 32, jugular fossa; 33, stylo-mastoid foramen; 34, jugular process of the occipital bone; 35, groove for occipital artery; 36, mastoid foramen; 37, posterior condylic foramen; 38, inferior curved line of occipital bone; 39, external occipital protuberance.

Base of the Skull

Shown is norma basalis, which refers to the base of the cranium. Labels: 1, external occipital crest;…

Shown is norma lateralis, which refers to the side of the skull. Labels: 1, mental foramen; 2, body of lower jaw; 3, superior maxillary; 4, ramus of lower jaw; 5, zygomatic arch; 6, styloid process; 7, external auditory meatus; 8, mastoid process; 9, asterion; 10, superior curved line of occipital bone; 11, external occipital protuberance; 12, lambdoid suture; 13, occipital bone; 14, lambda; 15, obelion placed between the two parietal foramina; 16, parietal bone; 17, lower temporal ridge; 18, upper temporal ridge; 19, squamous part of temporal bone; 20, bregma; 21, coronal suture; 22, stephanion; 23, frontal bone; 24, pterion; 25, temporal fossa; 26, great wing of sphenoid; 27, malar bone; 28, malar canal; 29, lachrymal bone; 30, nasal bone; 31, infraorbital canal; 32, anterior nasal aperture.

Side of the Skull

Shown is norma lateralis, which refers to the side of the skull. Labels: 1, mental foramen; 2, body…