The thyroid cartilage is the largest among the laryngeal cartilages. It is created from a right and a left lamina, which are extensively isolated posteriorly; however, they converge and link anteriorly. The most superior point of the site of combination amongst the two wide flat laminae projects forward as the laryngeal prominence a.k.a. Adam’s apple. [...]
Posterior nasal spine is created where the two horizontal plates combine at the midline as well as protrudes back from the edge of the hard palate. The posterior margin of the horizontal plates along with the posterior nasal spine is related to connection of the soft palate. Posterior Nasal Spine Palpation Posterior Nasal [...]
The ethmoid bone is situated between 2 orbital cavities and is an unpaired delicate bone. It possesses a perforated (sieve-like) plate referred to as cribriform plate that is why it is called ethmoid bone (Gr. ethmoid = sieve-like). Parts The ethmoid bone is made from the following parts: Cribriform plate. Crista galli. Perpendicular plate. 2 [...]
The lacrimal bone a.k.a. os lacrimale is quadrangular and it is the smallest of all bones of the skull. In relation to development, the lacrimal bone is basic as it goes through two stages of development and is created with connective tissue at its center. Structure The lacrimal bones possess two surfaces as [...]
The study of osteology (bony skeleton) of head and neck creates the foundation to understand this region. The skeleton of head and neck includes skull, cervical vertebrae and hyoid bone. The pupils should study the skull and cervical vertebrae extensively linking their principal features to the bony points which can be felt in a living [...]
The second cervical vertebra, commonly known as C2 is also called the axis. It is a peculiar cervical vertebra which possesses distinctive attributes and significant relations that facilitates its detection. The odontoid process is its most protuberant aspect, which is the body of the atlas or C1 as an embryo. It is vital for rotation [...]
There are 2 inferior nasal conchae. Every inferior nasal concha projects downwards from the lateral wall of the nasal cavity. It's a curved bony plate and presents these features: Medial and lateral surfaces. Superior and inferior edges. Anterior and posterior ends. Medial and Lateral Surfaces The medial surface is convex. The lateral surface is deeply [...]
Each one of the nasal bone has four bones, which create joints: two cranium as well as two facial bones. The cranium bones: the ethmoid and frontal. The facial bones: the maxilla and opposite nasal. Each nasal bone has four borders: the superior, inferior, lateral, and medial. Each nasal bone has two surfaces: the outer [...]
The skull is the bony skeleton of the head. Excluding ear ossicles, it is made of 22 bones. All the bones of skull, joined together by sutures, are immobile and create the cranium, with the exception of mandible (bone of lower jaw). On the other hand, the two terms skull and cranium are used synonymously. [...]
The stylomandibular ligament is the second supporting ligament of temporomandibular joint, including sphenomandibular ligament. Stylomandibular Ligament Origin It originates from styloid process and goes inferior as well as anterior towards the angle and posterior margin of the ramus of the mandible. Structure Stylomandibular ligament is a fibrous extension of the deep cervical fascia [...]